22011023231 has 2 divisors, whose sum is σ = 22011023232. Its totient is φ = 22011023230.

The previous prime is 22011023227. The next prime is 22011023261. The reversal of 22011023231 is 13232011022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22011023231 - 2² = 22011023227 is a prime.

It is a super-2 number, since 2×22011023231² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22011023261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11005511615 + 11005511616.

It is an arithmetic number, because the mean of its divisors is an integer number (11005511616).

Almost surely, 2^22011023231 is an apocalyptic number.

22011023231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22011023231 is an equidigital number, since it uses as much as digits as its factorization.

22011023231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22011023231 its reverse (13232011022), we get a palindrome (35243034253).

The spelling of 22011023231 in words is "twenty-two billion, eleven million, twenty-three thousand, two hundred thirty-one".