22131203431204 has 48 divisors (see below), whose sum is σ = 44381166979968. Its totient is φ = 9459385383168.

The previous prime is 22131203431163. The next prime is 22131203431213. The reversal of 22131203431204 is 40213430213122.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15680799 + ... + 17033785.

It is an arithmetic number, because the mean of its divisors is an integer number (924607645416).

Almost surely, 2^{22131203431204} is an apocalyptic number.

It is an amenable number.

22131203431204 is an abundant number, since it is smaller than the sum of its proper divisors (22249963548764).

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

22131203431204 is a wasteful number, since it uses less digits than its factorization.

22131203431204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354564 (or 1354562 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 22131203431204 its reverse (40213430213122), we get a palindrome (62344633644326).

The spelling of 22131203431204 in words is "twenty-two trillion, one hundred thirty-one billion, two hundred three million, four hundred thirty-one thousand, two hundred four".