321311110212 has 18 divisors (see below), whose sum is σ = 812203084238. Its totient is φ = 107103703392.

The previous prime is 321311110207. The next prime is 321311110249. The reversal of 321311110212 is 212011113123.

321311110212 is a `hidden beast` number, since 32 + 1 + 311 + 110 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 162880045056 + 158431065156 = 403584^2 + 398034^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4462654273 + ... + 4462654344.

Almost surely, 2^321311110212 is an apocalyptic number.

It is an amenable number.

321311110212 is an abundant number, since it is smaller than the sum of its proper divisors (490891974026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321311110212 is a wasteful number, since it uses less digits than its factorization.

321311110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925308627 (or 8925308622 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 321311110212 its reverse (212011113123), we get a palindrome (533322223335).

The spelling of 321311110212 in words is "three hundred twenty-one billion, three hundred eleven million, one hundred ten thousand, two hundred twelve".