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1220213022 = 237191529089
BaseRepresentation
bin100100010111010…
…1111100100011110
310011001001020120220
41020232233210132
54444333304042
6321025222210
742144432240
oct11056574436
93131036526
101220213022
11576862116
122a0791966
13165a50852
14b80b2090
15721ce8ec
hex48baf91e

1220213022 has 32 divisors (see below), whose sum is σ = 2935852800. Its totient is φ = 330283008.

The previous prime is 1220213009. The next prime is 1220213053. The reversal of 1220213022 is 2203120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220212992 and 1220213010.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 763747 + ... + 765342.

It is an arithmetic number, because the mean of its divisors is an integer number (91745400).

Almost surely, 21220213022 is an apocalyptic number.

1220213022 is an abundant number, since it is smaller than the sum of its proper divisors (1715639778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220213022 is a wasteful number, since it uses less digits than its factorization.

1220213022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529120.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220213022 is about 34931.5476611043. The cubic root of 1220213022 is about 1068.5919178793.

Adding to 1220213022 its reverse (2203120221), we get a palindrome (3423333243).

The spelling of 1220213022 in words is "one billion, two hundred twenty million, two hundred thirteen thousand, twenty-two".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 266 399 798 1529089 3058178 4587267 9174534 10703623 21407246 29052691 32110869 58105382 64221738 87158073 174316146 203368837 406737674 610106511 1220213022