22131251044 has 24 divisors (see below), whose sum is σ = 45690326528. Its totient is φ = 9178859520.

The previous prime is 22131250963. The next prime is 22131251059. The reversal of 22131251044 is 44015213122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12747549 + ... + 12749284.

Almost surely, 2^22131251044 is an apocalyptic number.

It is an amenable number.

22131251044 is an abundant number, since it is smaller than the sum of its proper divisors (23559075484).

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

22131251044 is a wasteful number, since it uses less digits than its factorization.

22131251044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25496875 (or 25496873 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 22131251044 its reverse (44015213122), we get a palindrome (66146464166).

The spelling of 22131251044 in words is "twenty-two billion, one hundred thirty-one million, two hundred fifty-one thousand, forty-four".