312102112220 has 24 divisors (see below), whose sum is σ = 655472412000. Its totient is φ = 124829801792.

The previous prime is 312102112193. The next prime is 312102112261. The reversal of 312102112220 is 22211201213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456515 + ... + 912474.

It is an arithmetic number, because the mean of its divisors is an integer number (27311350500).

Almost surely, 2^312102112220 is an apocalyptic number.

It is an amenable number.

312102112220 is an abundant number, since it is smaller than the sum of its proper divisors (343370299780).

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

312102112220 is a wasteful number, since it uses less digits than its factorization.

312102112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380397 (or 1380395 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 312102112220 its reverse (22211201213), we get a palindrome (334313313433).

The spelling of 312102112220 in words is "three hundred twelve billion, one hundred two million, one hundred twelve thousand, two hundred twenty".