100222131231 has 24 divisors (see below), whose sum is σ = 146593399680. Its totient is φ = 65971939536.

The previous prime is 100222131227. The next prime is 100222131259. The reversal of 100222131231 is 132131222001.

100222131231 is a `hidden beast` number, since 100 + 2 + 221 + 312 + 31 = 666.

It is not a de Polignac number, because 100222131231 - 2² = 100222131227 is a prime.

It is a super-2 number, since 2×100222131231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100222131221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297350 + ... + 1372428.

It is an arithmetic number, because the mean of its divisors is an integer number (6108058320).

Almost surely, 2^100222131231 is an apocalyptic number.

100222131231 is a deficient number, since it is larger than the sum of its proper divisors (46371268449).

100222131231 is a wasteful number, since it uses less digits than its factorization.

100222131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76955 (or 76952 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 100222131231 its reverse (132131222001), we get a palindrome (232353353232).

The spelling of 100222131231 in words is "one hundred billion, two hundred twenty-two million, one hundred thirty-one thousand, two hundred thirty-one".