321212311312 has 20 divisors (see below), whose sum is σ = 635590319616. Its totient is φ = 157189003040.

The previous prime is 321212311271. The next prime is 321212311327. The reversal of 321212311312 is 213113212123.

It is a super-2 number, since 2×321212311312² (a number of 24 digits) contains 22 as substring.

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, 213571264 + ... + 213572767.

Almost surely, 2^321212311312 is an apocalyptic number.

It is an amenable number.

321212311312 is a deficient number, since it is larger than the sum of its proper divisors (314378008304).

321212311312 is a wasteful number, since it uses less digits than its factorization.

321212311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427144086 (or 427144080 counting only the distinct ones).

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

Adding to 321212311312 its reverse (213113212123), we get a palindrome (534325523435).

The spelling of 321212311312 in words is "three hundred twenty-one billion, two hundred twelve million, three hundred eleven thousand, three hundred twelve".