100212312231 has 12 divisors (see below), whose sum is σ = 144760028400. Its totient is φ = 66804095520.

The previous prime is 100212312191. The next prime is 100212312241. The reversal of 100212312231 is 132213212001.

100212312231 is a `hidden beast` number, since 100 + 21 + 2 + 312 + 231 = 666.

It is not a de Polignac number, because 100212312231 - 2²² = 100208117927 is a prime.

It is a super-2 number, since 2×100212312231² (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 (100212312241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184555 + ... + 484236.

It is an arithmetic number, because the mean of its divisors is an integer number (12063335700).

Almost surely, 2^100212312231 is an apocalyptic number.

100212312231 is a deficient number, since it is larger than the sum of its proper divisors (44547716169).

100212312231 is a wasteful number, since it uses less digits than its factorization.

100212312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685446 (or 685443 counting only the distinct ones).

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

Adding to 100212312231 its reverse (132213212001), we get a palindrome (232425524232).

The spelling of 100212312231 in words is "one hundred billion, two hundred twelve million, three hundred twelve thousand, two hundred thirty-one".