321221013023 has 24 divisors (see below), whose sum is σ = 337112834688. Its totient is φ = 306051383792.

The previous prime is 321221013011. The next prime is 321221013073. The reversal of 321221013023 is 320310122123.

It is not a de Polignac number, because 321221013023 - 2⁴ = 321221013007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321221012986 and 321221013004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321221013073) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192693236 + ... + 192694902.

It is an arithmetic number, because the mean of its divisors is an integer number (14046368112).

Almost surely, 2^321221013023 is an apocalyptic number.

321221013023 is a deficient number, since it is larger than the sum of its proper divisors (15891821665).

321221013023 is a wasteful number, since it uses less digits than its factorization.

321221013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2923 (or 2900 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 321221013023 its reverse (320310122123), we get a palindrome (641531135146).

The spelling of 321221013023 in words is "three hundred twenty-one billion, two hundred twenty-one million, thirteen thousand, twenty-three".