12155225261022 has 64 divisors (see below), whose sum is σ = 27089985139200. Its totient is φ = 4040002137600.

The previous prime is 12155225260967. The next prime is 12155225261029. The reversal of 12155225261022 is 22016252255121.

12155225261022 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 5 + 22 + 526 + 102 + 2 = 666.

It is a super-2 number, since 2×12155225261022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155225261029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26537647 + ... + 26991797.

It is an arithmetic number, because the mean of its divisors is an integer number (423281017800).

Almost surely, 2^{12155225261022} is an apocalyptic number.

12155225261022 is an abundant number, since it is smaller than the sum of its proper divisors (14934759878178).

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

12155225261022 is a wasteful number, since it uses less digits than its factorization.

12155225261022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455598 (or 455592 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

The spelling of 12155225261022 in words is "twelve trillion, one hundred fifty-five billion, two hundred twenty-five million, two hundred sixty-one thousand, twenty-two".