321022121312 has 24 divisors (see below), whose sum is σ = 633365676216. Its totient is φ = 160167346432.

The previous prime is 321022121297. The next prime is 321022121323. The reversal of 321022121312 is 213121220123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10725893 + ... + 10755780.

It is an arithmetic number, because the mean of its divisors is an integer number (26390236509).

Almost surely, 2^321022121312 is an apocalyptic number.

321022121312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

321022121312 is a deficient number, since it is larger than the sum of its proper divisors (312343554904).

321022121312 is a wasteful number, since it uses less digits than its factorization.

321022121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21482150 (or 21482142 counting only the distinct ones).

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

Adding to 321022121312 its reverse (213121220123), we get a palindrome (534143341435).

The spelling of 321022121312 in words is "three hundred twenty-one billion, twenty-two million, one hundred twenty-one thousand, three hundred twelve".