23221203321 has 16 divisors (see below), whose sum is σ = 32206224960. Its totient is φ = 14864391360.

The previous prime is 23221203301. The next prime is 23221203323. The reversal of 23221203321 is 12330212232.

It is a happy number.

It is not a de Polignac number, because 23221203321 - 2⁵ = 23221203289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23221203323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721575 + ... + 753068.

It is an arithmetic number, because the mean of its divisors is an integer number (2012889060).

Almost surely, 2^23221203321 is an apocalyptic number.

It is an amenable number.

23221203321 is a deficient number, since it is larger than the sum of its proper divisors (8985021639).

23221203321 is a wasteful number, since it uses less digits than its factorization.

23221203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474856.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23221203321 its reverse (12330212232), we get a palindrome (35551415553).

The spelling of 23221203321 in words is "twenty-three billion, two hundred twenty-one million, two hundred three thousand, three hundred twenty-one".