321032313221 has 8 divisors (see below), whose sum is σ = 331971463584. Its totient is φ = 310273975440.

The previous prime is 321032313187. The next prime is 321032313311. The reversal of 321032313221 is 122313230123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321032313221 is a prime.

It is a super-2 number, since 2×321032313221² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321032313421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45199535 + ... + 45206636.

It is an arithmetic number, because the mean of its divisors is an integer number (41496432948).

Almost surely, 2^321032313221 is an apocalyptic number.

It is an amenable number.

321032313221 is a deficient number, since it is larger than the sum of its proper divisors (10939150363).

321032313221 is an equidigital number, since it uses as much as digits as its factorization.

321032313221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90406291.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 321032313221 its reverse (122313230123), we get a palindrome (443345543344).

The spelling of 321032313221 in words is "three hundred twenty-one billion, thirty-two million, three hundred thirteen thousand, two hundred twenty-one".