321313201212 has 24 divisors (see below), whose sum is σ = 751076834256. Its totient is φ = 106912110208.

The previous prime is 321313201159. The next prime is 321313201219. The reversal of 321313201212 is 212102313123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313201219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24029313 + ... + 24042680.

It is an arithmetic number, because the mean of its divisors is an integer number (31294868094).

Almost surely, 2^321313201212 is an apocalyptic number.

It is an amenable number.

321313201212 is an abundant number, since it is smaller than the sum of its proper divisors (429763633044).

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

321313201212 is a wasteful number, since it uses less digits than its factorization.

321313201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48072557 (or 48072555 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 321313201212 its reverse (212102313123), we get a palindrome (533415514335).

The spelling of 321313201212 in words is "three hundred twenty-one billion, three hundred thirteen million, two hundred one thousand, two hundred twelve".