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1011213021 = 37132499571
BaseRepresentation
bin111100010001011…
…110001011011101
32121110202221111010
4330101132023131
54032332304041
6244201445433
734026111630
oct7421361335
92543687433
101011213021
11479892345
122427a0879
13131664c00
1498429c17
155db98a16
hex3c45e2dd

1011213021 has 48 divisors (see below), whose sum is σ = 1674816000. Its totient is φ = 531385920.

The previous prime is 1011213013. The next prime is 1011213031. The reversal of 1011213021 is 1203121101.

It is not a de Polignac number, because 1011213021 - 23 = 1011213013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011212988 and 1011213006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1770666 + ... + 1771236.

It is an arithmetic number, because the mean of its divisors is an integer number (34892000).

Almost surely, 21011213021 is an apocalyptic number.

It is an amenable number.

1011213021 is a deficient number, since it is larger than the sum of its proper divisors (663602979).

1011213021 is a wasteful number, since it uses less digits than its factorization.

1011213021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1093 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1011213021 is about 31799.5757990574. The cubic root of 1011213021 is about 1003.7237898438.

Adding to 1011213021 its reverse (1203121101), we get a palindrome (2214334122).

The spelling of 1011213021 in words is "one billion, eleven million, two hundred thirteen thousand, twenty-one".

Divisors: 1 3 7 13 21 39 91 169 273 499 507 571 1183 1497 1713 3493 3549 3997 6487 7423 10479 11991 19461 22269 45409 51961 84331 96499 136227 155883 252993 284929 289497 590317 675493 854787 1770951 1994503 2026479 3704077 5983509 11112231 25928539 48153001 77785617 144459003 337071007 1011213021