321201320212 has 6 divisors (see below), whose sum is σ = 562102310378. Its totient is φ = 160600660104.

The previous prime is 321201320189. The next prime is 321201320281. The reversal of 321201320212 is 212023102123.

It can be written as a sum of positive squares in only one way, i.e., 185273428356 + 135927891856 = 430434^2 + 368684^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 321201320212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40150165023 + ... + 40150165030.

Almost surely, 2^321201320212 is an apocalyptic number.

It is an amenable number.

321201320212 is a deficient number, since it is larger than the sum of its proper divisors (240900990166).

321201320212 is a wasteful number, since it uses less digits than its factorization.

321201320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80300330057 (or 80300330055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 321201320212 its reverse (212023102123), we get a palindrome (533224422335).

The spelling of 321201320212 in words is "three hundred twenty-one billion, two hundred one million, three hundred twenty thousand, two hundred twelve".