321213211112 has 16 divisors (see below), whose sum is σ = 602284526340. Its totient is φ = 160604004096.

The previous prime is 321213211049. The next prime is 321213211171. The reversal of 321213211112 is 211112312123.

It can be written as a sum of positive squares in 2 ways, for example, as 316219527556 + 4993683556 = 562334^2 + 70666^2 .

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, 261938 + ... + 843230.

Almost surely, 2^321213211112 is an apocalyptic number.

It is an amenable number.

321213211112 is a deficient number, since it is larger than the sum of its proper divisors (281071315228).

321213211112 is a wasteful number, since it uses less digits than its factorization.

321213211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650372 (or 650368 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

Adding to 321213211112 its reverse (211112312123), we get a palindrome (532325523235).

The spelling of 321213211112 in words is "three hundred twenty-one billion, two hundred thirteen million, two hundred eleven thousand, one hundred twelve".