312112320122 has 4 divisors (see below), whose sum is σ = 468168480186. Its totient is φ = 156056160060.

The previous prime is 312112320119. The next prime is 312112320151. The reversal of 312112320122 is 221023211213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 300480481921 + 11631838201 = 548161^2 + 107851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312112320094 and 312112320103.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78028080029 + ... + 78028080032.

Almost surely, 2^312112320122 is an apocalyptic number.

312112320122 is a deficient number, since it is larger than the sum of its proper divisors (156056160064).

312112320122 is a wasteful number, since it uses less digits than its factorization.

312112320122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156056160063.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 312112320122 its reverse (221023211213), we get a palindrome (533135531335).

The spelling of 312112320122 in words is "three hundred twelve billion, one hundred twelve million, three hundred twenty thousand, one hundred twenty-two".