321313211030021 has 96 divisors (see below), whose sum is σ = 423930906624000. Its totient is φ = 237608499824640.

The previous prime is 321313211030011. The next prime is 321313211030041. The reversal of 321313211030021 is 120030112313123.

It is not a de Polignac number, because 321313211030021 - 2⁶ = 321313211029957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321313211030011) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 9064080305 + ... + 9064115753.

It is an arithmetic number, because the mean of its divisors is an integer number (4415946944000).

Almost surely, 2^{321313211030021} is an apocalyptic number.

321313211030021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

321313211030021 is a deficient number, since it is larger than the sum of its proper divisors (102617695593979).

321313211030021 is a wasteful number, since it uses less digits than its factorization.

321313211030021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43147 (or 43130 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 321313211030021 its reverse (120030112313123), we get a palindrome (441343323343144).

The spelling of 321313211030021 in words is "three hundred twenty-one trillion, three hundred thirteen billion, two hundred eleven million, thirty thousand, twenty-one".