312222122 has 8 divisors (see below), whose sum is σ = 468409476. Its totient is φ = 156085632.

The previous prime is 312222101. The next prime is 312222203. The reversal of 312222122 is 221222213.

It can be written as a sum of positive squares in 2 ways, for example, as 312193561 + 28561 = 17669^2 + 169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 312222122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13178 + ... + 28250.

Almost surely, 2^312222122 is an apocalyptic number.

312222122 is a deficient number, since it is larger than the sum of its proper divisors (156187354).

312222122 is a wasteful number, since it uses less digits than its factorization.

312222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25432.

The product of its digits is 192, while the sum is 17.

The square root of 312222122 is about 17669.8082049580. The cubic root of 312222122 is about 678.4032039836.

Adding to 312222122 its reverse (221222213), we get a palindrome (533444335).

Subtracting from 312222122 its reverse (221222213), we obtain a palindrome (90999909).

The spelling of 312222122 in words is "three hundred twelve million, two hundred twenty-two thousand, one hundred twenty-two".