323003320013221 has 4 divisors (see below), whose sum is σ = 323003901271500. Its totient is φ = 323002738754944.

The previous prime is 323003320013219. The next prime is 323003320013251. The reversal of 323003320013221 is 122310023300323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92640894500196 + 230362425513025 = 9625014^2 + 15177695^2 .

It is a cyclic number.

It is not a de Polignac number, because 323003320013221 - 2¹ = 323003320013219 is a prime.

It is a super-2 number, since 2×323003320013221² (a number of 30 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 (323003320013251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289794796 + ... + 290907253.

It is an arithmetic number, because the mean of its divisors is an integer number (80750975317875).

Almost surely, 2^{323003320013221} is an apocalyptic number.

It is an amenable number.

323003320013221 is a deficient number, since it is larger than the sum of its proper divisors (581258279).

323003320013221 is an equidigital number, since it uses as much as digits as its factorization.

323003320013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581258278.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 323003320013221 its reverse (122310023300323), we get a palindrome (445313343313544).

The spelling of 323003320013221 in words is "three hundred twenty-three trillion, three billion, three hundred twenty million, thirteen thousand, two hundred twenty-one".