322221331021 has 4 divisors (see below), whose sum is σ = 322230646044. Its totient is φ = 322212016000.

The previous prime is 322221330971. The next prime is 322221331067. The reversal of 322221331021 is 120133122223.

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 72071308521 + 250150022500 = 268461^2 + 500150^2 .

It is a cyclic number.

It is not a de Polignac number, because 322221331021 - 2²³ = 322212942413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 322221330983 and 322221331001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322221331321) 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, 4605430 + ... + 4674871.

It is an arithmetic number, because the mean of its divisors is an integer number (80557661511).

Almost surely, 2^322221331021 is an apocalyptic number.

It is an amenable number.

322221331021 is a deficient number, since it is larger than the sum of its proper divisors (9315023).

322221331021 is an equidigital number, since it uses as much as digits as its factorization.

322221331021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315022.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 322221331021 its reverse (120133122223), we get a palindrome (442354453244).

The spelling of 322221331021 in words is "three hundred twenty-two billion, two hundred twenty-one million, three hundred thirty-one thousand, twenty-one".