22131562400 has 36 divisors (see below), whose sum is σ = 54028678662. Its totient is φ = 8852624640.

The previous prime is 22131562391. The next prime is 22131562423. The reversal of 22131562400 is 426513122.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 16913522704 + 5218039696 = 130052^2 + 72236^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22131562400.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13831427 + ... + 13833026.

Almost surely, 2^22131562400 is an apocalyptic number.

22131562400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22131562400 is an abundant number, since it is smaller than the sum of its proper divisors (31897116262).

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

22131562400 is a wasteful number, since it uses less digits than its factorization.

22131562400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27664473 (or 27664460 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 22131562400 in words is "twenty-two billion, one hundred thirty-one million, five hundred sixty-two thousand, four hundred".