Base | Representation |
---|---|
bin | 111100010001011… |
… | …110001011011101 |
3 | 2121110202221111010 |
4 | 330101132023131 |
5 | 4032332304041 |
6 | 244201445433 |
7 | 34026111630 |
oct | 7421361335 |
9 | 2543687433 |
10 | 1011213021 |
11 | 479892345 |
12 | 2427a0879 |
13 | 131664c00 |
14 | 98429c17 |
15 | 5db98a16 |
hex | 3c45e2dd |
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".
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