312122021122 has 16 divisors (see below), whose sum is σ = 479100438432. Its totient is φ = 152422320960.

The previous prime is 312122021119. The next prime is 312122021131. The reversal of 312122021122 is 221120221213.

It is a self number, because there is not a number n which added to its sum of digits gives 312122021122.

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, 1417933 + ... + 1623199.

It is an arithmetic number, because the mean of its divisors is an integer number (29943777402).

Almost surely, 2^312122021122 is an apocalyptic number.

312122021122 is a deficient number, since it is larger than the sum of its proper divisors (166978417310).

312122021122 is a wasteful number, since it uses less digits than its factorization.

312122021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222993.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 312122021122 its reverse (221120221213), we get a palindrome (533242242335).

The spelling of 312122021122 in words is "three hundred twelve billion, one hundred twenty-two million, twenty-one thousand, one hundred twenty-two".