312100012122 has 16 divisors (see below), whose sum is σ = 635977383840. Its totient is φ = 102070444112.

The previous prime is 312100012117. The next prime is 312100012129. The reversal of 312100012122 is 221210001213.

It is not an unprimeable number, because it can be changed into a prime (312100012129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490722972 + ... + 490723607.

It is an arithmetic number, because the mean of its divisors is an integer number (39748586490).

Almost surely, 2^312100012122 is an apocalyptic number.

312100012122 is an abundant number, since it is smaller than the sum of its proper divisors (323877371718).

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

312100012122 is a wasteful number, since it uses less digits than its factorization.

312100012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981446637.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 312100012122 its reverse (221210001213), we get a palindrome (533310013335).

The spelling of 312100012122 in words is "three hundred twelve billion, one hundred million, twelve thousand, one hundred twenty-two".