312120555540102 has 24 divisors (see below), whose sum is σ = 676266516853200. Its totient is φ = 104039367767280.

The previous prime is 312120555540049. The next prime is 312120555540107. The reversal of 312120555540102 is 201045555021213.

312120555540102 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 2 + 0 + 5 + 5 + 5 + 540 + 102 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312120555540107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65760849 + ... + 70347212.

It is an arithmetic number, because the mean of its divisors is an integer number (28177771535550).

Almost surely, 2^{312120555540102} is an apocalyptic number.

312120555540102 is an abundant number, since it is smaller than the sum of its proper divisors (364145961313098).

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

312120555540102 is a wasteful number, since it uses less digits than its factorization.

312120555540102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136235468 (or 136235465 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 312120555540102 in words is "three hundred twelve trillion, one hundred twenty billion, five hundred fifty-five million, five hundred forty thousand, one hundred two".