22055055012 has 18 divisors (see below), whose sum is σ = 55750278038. Its totient is φ = 7351684992.

The previous prime is 22055054999. The next prime is 22055055013. The reversal of 22055055012 is 21055055022.

It can be written as a sum of positive squares in only one way, i.e., 12745506816 + 9309548196 = 112896^2 + 96486^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (22055055013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 306320173 + ... + 306320244.

Almost surely, 2^22055055012 is an apocalyptic number.

It is an amenable number.

22055055012 is an abundant number, since it is smaller than the sum of its proper divisors (33695223026).

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

22055055012 is a wasteful number, since it uses less digits than its factorization.

22055055012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612640427 (or 612640422 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The spelling of 22055055012 in words is "twenty-two billion, fifty-five million, fifty-five thousand, twelve".