22331023221 has 32 divisors (see below), whose sum is σ = 32824995840. Its totient is φ = 13419576000.

The previous prime is 22331023213. The next prime is 22331023229. The reversal of 22331023221 is 12232013322.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22331023213) and next prime (22331023229).

It is not a de Polignac number, because 22331023221 - 2³ = 22331023213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22331023229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 315316 + ... + 379586.

It is an arithmetic number, because the mean of its divisors is an integer number (1025781120).

Almost surely, 2^22331023221 is an apocalyptic number.

It is an amenable number.

22331023221 is a deficient number, since it is larger than the sum of its proper divisors (10493972619).

22331023221 is a wasteful number, since it uses less digits than its factorization.

22331023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64497.

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

Adding to 22331023221 its reverse (12232013322), we get a palindrome (34563036543).

The spelling of 22331023221 in words is "twenty-two billion, three hundred thirty-one million, twenty-three thousand, two hundred twenty-one".