321013112021 has 16 divisors (see below), whose sum is σ = 382910029824. Its totient is φ = 263131103664.

The previous prime is 321013112003. The next prime is 321013112071. The reversal of 321013112021 is 120211310123.

It is not a de Polignac number, because 321013112021 - 2¹⁰ = 321013110997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321013112071) 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, 491786 + ... + 940148.

It is an arithmetic number, because the mean of its divisors is an integer number (23931876864).

Almost surely, 2^321013112021 is an apocalyptic number.

It is an amenable number.

321013112021 is a deficient number, since it is larger than the sum of its proper divisors (61896917803).

321013112021 is a wasteful number, since it uses less digits than its factorization.

321013112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452840.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 321013112021 its reverse (120211310123), we get a palindrome (441224422144).

The spelling of 321013112021 in words is "three hundred twenty-one billion, thirteen million, one hundred twelve thousand, twenty-one".