312122211332 has 12 divisors (see below), whose sum is σ = 551844941340. Its totient is φ = 154452228096.

The previous prime is 312122211307. The next prime is 312122211337. The reversal of 312122211332 is 233112221213.

It can be written as a sum of positive squares in 2 ways, for example, as 77337385216 + 234784826116 = 278096^2 + 484546^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312122211298 and 312122211307.

It is not an unprimeable number, because it can be changed into a prime (312122211337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402218957 + ... + 402219732.

It is an arithmetic number, because the mean of its divisors is an integer number (45987078445).

Almost surely, 2^312122211332 is an apocalyptic number.

It is an amenable number.

312122211332 is a deficient number, since it is larger than the sum of its proper divisors (239722730008).

312122211332 is a wasteful number, since it uses less digits than its factorization.

312122211332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804438790 (or 804438788 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 312122211332 its reverse (233112221213), we get a palindrome (545234432545).

The spelling of 312122211332 in words is "three hundred twelve billion, one hundred twenty-two million, two hundred eleven thousand, three hundred thirty-two".