22642165331 has 2 divisors, whose sum is σ = 22642165332. Its totient is φ = 22642165330.

The previous prime is 22642165321. The next prime is 22642165339. The reversal of 22642165331 is 13356124622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22642165331 is a prime.

It is a super-2 number, since 2×22642165331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22642165291 and 22642165300.

It is not a weakly prime, because it can be changed into another prime (22642165339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11321082665 + 11321082666.

It is an arithmetic number, because the mean of its divisors is an integer number (11321082666).

Almost surely, 2^22642165331 is an apocalyptic number.

22642165331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22642165331 is an equidigital number, since it uses as much as digits as its factorization.

22642165331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

Adding to 22642165331 its reverse (13356124622), we get a palindrome (35998289953).

The spelling of 22642165331 in words is "twenty-two billion, six hundred forty-two million, one hundred sixty-five thousand, three hundred thirty-one".