22521055522 has 32 divisors (see below), whose sum is σ = 40666291200. Its totient is φ = 9340521120.

The previous prime is 22521055489. The next prime is 22521055523. The reversal of 22521055522 is 22555012522.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (22521055523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508243 + ... + 550774.

It is an arithmetic number, because the mean of its divisors is an integer number (1270821600).

Almost surely, 2^22521055522 is an apocalyptic number.

22521055522 is a deficient number, since it is larger than the sum of its proper divisors (18145235678).

22521055522 is a wasteful number, since it uses less digits than its factorization.

22521055522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059071 (or 1059057 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The spelling of 22521055522 in words is "twenty-two billion, five hundred twenty-one million, fifty-five thousand, five hundred twenty-two".