22312320232221 has 32 divisors (see below), whose sum is σ = 33269295628800. Its totient is φ = 14778787343040.

The previous prime is 22312320232217. The next prime is 22312320232231. The reversal of 22312320232221 is 12223202321322.

22312320232221 is a `hidden beast` number, since 2 + 2 + 3 + 12 + 320 + 2 + 322 + 2 + 1 = 666.

It is not a de Polignac number, because 22312320232221 - 2² = 22312320232217 is a prime.

It is a super-3 number, since 3×22312320232221³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22312320232231) 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, 907231 + ... + 6741491.

It is an arithmetic number, because the mean of its divisors is an integer number (1039665488400).

Almost surely, 2^{22312320232221} is an apocalyptic number.

It is an amenable number.

22312320232221 is a deficient number, since it is larger than the sum of its proper divisors (10956975396579).

22312320232221 is a wasteful number, since it uses less digits than its factorization.

22312320232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835186 (or 5835180 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 22312320232221 its reverse (12223202321322), we get a palindrome (34535522553543).

The spelling of 22312320232221 in words is "twenty-two trillion, three hundred twelve billion, three hundred twenty million, two hundred thirty-two thousand, two hundred twenty-one".