312122122 has 16 divisors (see below), whose sum is σ = 515924640. Its totient is φ = 140705712.

The previous prime is 312122119. The next prime is 312122143. The reversal of 312122122 is 221221213.

It is a happy number.

312122122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 312122096 and 312122105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138472 + ... + 140707.

It is an arithmetic number, because the mean of its divisors is an integer number (32245290).

Almost surely, 2^312122122 is an apocalyptic number.

312122122 is a deficient number, since it is larger than the sum of its proper divisors (203802518).

312122122 is a wasteful number, since it uses less digits than its factorization.

312122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279237.

The product of its digits is 96, while the sum is 16.

The square root of 312122122 is about 17666.9782928491. The cubic root of 312122122 is about 678.3307688382.

Adding to 312122122 its reverse (221221213), we get a palindrome (533343335).

Subtracting from 312122122 its reverse (221221213), we obtain a palindrome (90900909).

The spelling of 312122122 in words is "three hundred twelve million, one hundred twenty-two thousand, one hundred twenty-two".