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22222121022 = 2322040760497
BaseRepresentation
bin10100101100100010…
…101010100000111110
32010100200211201020100
4110230202222200332
5331002330333042
614113025101530
71414453624563
oct245442524076
963320751210
1022222121022
119473898482
1243821878a6
132131b82c4a
14110b48086a
158a0da724c
hex52c8aa83e

22222121022 has 24 divisors (see below), whose sum is σ = 48151084176. Its totient is φ = 7406888256.

The previous prime is 22222120997. The next prime is 22222121027. The reversal of 22222121022 is 22012122222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 22222120986 and 22222121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222121027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 337078 + ... + 397574.

It is an arithmetic number, because the mean of its divisors is an integer number (2006295174).

Almost surely, 222222121022 is an apocalyptic number.

22222121022 is an abundant number, since it is smaller than the sum of its proper divisors (25928963154).

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

22222121022 is a wasteful number, since it uses less digits than its factorization.

22222121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80912 (or 80909 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22222121022 its reverse (22012122222), we get a palindrome (44234243244).

The spelling of 22222121022 in words is "twenty-two billion, two hundred twenty-two million, one hundred twenty-one thousand, twenty-two".

Divisors: 1 2 3 6 9 18 20407 40814 60497 61221 120994 122442 181491 183663 362982 367326 544473 1088946 1234562279 2469124558 3703686837 7407373674 11111060511 22222121022