23131221132100 has 36 divisors (see below), whose sum is σ = 51925603306500. Its totient is φ = 8933437125760.

The previous prime is 23131221132091. The next prime is 23131221132113. The reversal of 23131221132100 is 123112213132.

It can be written as a sum of positive squares in 6 ways, for example, as 3589994193984 + 19541226938116 = 1894728^2 + 4420546^2 .

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, 3988138675 + ... + 3988144474.

It is an arithmetic number, because the mean of its divisors is an integer number (1442377869625).

Almost surely, 2^{23131221132100} is an apocalyptic number.

23131221132100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23131221132100 is an abundant number, since it is smaller than the sum of its proper divisors (28794382174400).

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

23131221132100 is a wasteful number, since it uses less digits than its factorization.

23131221132100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976283192 (or 7976283185 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 23131221132100 its reverse (123112213132), we get a palindrome (23254333345232).

The spelling of 23131221132100 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred twenty-one million, one hundred thirty-two thousand, one hundred".