22231012321 has 16 divisors (see below), whose sum is σ = 26364816000. Its totient is φ = 18732167664.

The previous prime is 22231012289. The next prime is 22231012351. The reversal of 22231012321 is 12321013222.

It is not a de Polignac number, because 22231012321 - 2⁵ = 22231012289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22231012351) 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, 529030 + ... + 569503.

It is an arithmetic number, because the mean of its divisors is an integer number (1647801000).

Almost surely, 2^22231012321 is an apocalyptic number.

It is an amenable number.

22231012321 is a deficient number, since it is larger than the sum of its proper divisors (4133803679).

22231012321 is an equidigital number, since it uses as much as digits as its factorization.

22231012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098613 (or 1098599 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22231012321 its reverse (12321013222), we get a palindrome (34552025543).

Subtracting from 22231012321 its reverse (12321013222), we obtain a palindrome (9909999099).

The spelling of 22231012321 in words is "twenty-two billion, two hundred thirty-one million, twelve thousand, three hundred twenty-one".