22012132400 has 60 divisors (see below), whose sum is σ = 53429439672. Its totient is φ = 8714065920.

The previous prime is 22012132393. The next prime is 22012132433. The reversal of 22012132400 is 423121022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244862 + ... + 322461.

Almost surely, 2^22012132400 is an apocalyptic number.

22012132400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012132400 is an abundant number, since it is smaller than the sum of its proper divisors (31417307272).

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

22012132400 is a wasteful number, since it uses less digits than its factorization.

22012132400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567438 (or 567427 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 22012132400 its reverse (423121022), we get a palindrome (22435253422).

The spelling of 22012132400 in words is "twenty-two billion, twelve million, one hundred thirty-two thousand, four hundred".