213312311122 has 4 divisors (see below), whose sum is σ = 319968466686. Its totient is φ = 106656155560.

The previous prime is 213312311099. The next prime is 213312311167. The reversal of 213312311122 is 221113213312.

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., 155087103721 + 58225207401 = 393811^2 + 241299^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213312311093 and 213312311102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53328077779 + ... + 53328077782.

Almost surely, 2^213312311122 is an apocalyptic number.

213312311122 is a deficient number, since it is larger than the sum of its proper divisors (106656155564).

213312311122 is a wasteful number, since it uses less digits than its factorization.

213312311122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106656155563.

The product of its digits is 432, while the sum is 22.

Adding to 213312311122 its reverse (221113213312), we get a palindrome (434425524434).

The spelling of 213312311122 in words is "two hundred thirteen billion, three hundred twelve million, three hundred eleven thousand, one hundred twenty-two".