321222323221 has 4 divisors (see below), whose sum is σ = 322192783744. Its totient is φ = 320251862700.

The previous prime is 321222323179. The next prime is 321222323321. The reversal of 321222323221 is 122323222123.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 321222323221 - 2²⁹ = 320685452309 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 (321222323321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 485229765 + ... + 485230426.

It is an arithmetic number, because the mean of its divisors is an integer number (80548195936).

Almost surely, 2^321222323221 is an apocalyptic number.

It is an amenable number.

321222323221 is a deficient number, since it is larger than the sum of its proper divisors (970460523).

321222323221 is an equidigital number, since it uses as much as digits as its factorization.

321222323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970460522.

The product of its digits is 3456, while the sum is 25.

Adding to 321222323221 its reverse (122323222123), we get a palindrome (443545545344).

The spelling of 321222323221 in words is "three hundred twenty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, two hundred twenty-one".