321203212112 has 80 divisors (see below), whose sum is σ = 638297003520. Its totient is φ = 156512507904.

The previous prime is 321203212111. The next prime is 321203212117. The reversal of 321203212112 is 211212302123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321203212111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247650248 + ... + 247651544.

It is an arithmetic number, because the mean of its divisors is an integer number (7978712544).

Almost surely, 2^321203212112 is an apocalyptic number.

It is an amenable number.

321203212112 is a deficient number, since it is larger than the sum of its proper divisors (317093791408).

321203212112 is a wasteful number, since it uses less digits than its factorization.

321203212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 321203212112 its reverse (211212302123), we get a palindrome (532415514235).

The spelling of 321203212112 in words is "three hundred twenty-one billion, two hundred three million, two hundred twelve thousand, one hundred twelve".