321021213112 has 16 divisors (see below), whose sum is σ = 602020663200. Its totient is φ = 160482369600.

The previous prime is 321021213103. The next prime is 321021213131. The reversal of 321021213112 is 211312120123.

It is a self number, because there is not a number n which added to its sum of digits gives 321021213112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3481264 + ... + 3572287.

It is an arithmetic number, because the mean of its divisors is an integer number (37626291450).

Almost surely, 2^321021213112 is an apocalyptic number.

It is an amenable number.

321021213112 is a deficient number, since it is larger than the sum of its proper divisors (280999450088).

321021213112 is a wasteful number, since it uses less digits than its factorization.

321021213112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7059246 (or 7059242 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 321021213112 its reverse (211312120123), we get a palindrome (532333333235).

The spelling of 321021213112 in words is "three hundred twenty-one billion, twenty-one million, two hundred thirteen thousand, one hundred twelve".