312213120102 has 24 divisors (see below), whose sum is σ = 728497280784. Its totient is φ = 96065575344.

The previous prime is 312213120091. The next prime is 312213120113. The reversal of 312213120102 is 201021312213.

312213120102 is a `hidden beast` number, since 31 + 221 + 312 + 0 + 102 = 666.

It is an interprime number because it is at equal distance from previous prime (312213120091) and next prime (312213120113).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 667121818 + ... + 667122285.

It is an arithmetic number, because the mean of its divisors is an integer number (30354053366).

Almost surely, 2^312213120102 is an apocalyptic number.

312213120102 is an abundant number, since it is smaller than the sum of its proper divisors (416284160682).

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

312213120102 is a wasteful number, since it uses less digits than its factorization.

312213120102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334244124 (or 1334244121 counting only the distinct ones).

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

Adding to 312213120102 its reverse (201021312213), we get a palindrome (513234432315).

The spelling of 312213120102 in words is "three hundred twelve billion, two hundred thirteen million, one hundred twenty thousand, one hundred two".