22502513100 has 72 divisors (see below), whose sum is σ = 65123710288. Its totient is φ = 5999155200.

The previous prime is 22502513081. The next prime is 22502513123. The reversal of 22502513100 is 131520522.

It is a super-2 number, since 2×22502513100² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1685652 + ... + 1698948.

Almost surely, 2^22502513100 is an apocalyptic number.

22502513100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22502513100 is an abundant number, since it is smaller than the sum of its proper divisors (42621197188).

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

22502513100 is a wasteful number, since it uses less digits than its factorization.

22502513100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18955 (or 18948 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 22502513100 in words is "twenty-two billion, five hundred two million, five hundred thirteen thousand, one hundred".