23211222137 has 2 divisors, whose sum is σ = 23211222138. Its totient is φ = 23211222136.

The previous prime is 23211222071. The next prime is 23211222197. The reversal of 23211222137 is 73122211232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22916207161 + 295014976 = 151381^2 + 17176^2 .

It is a cyclic number.

It is not a de Polignac number, because 23211222137 - 2²⁸ = 22942786681 is a prime.

It is not a weakly prime, because it can be changed into another prime (23211222197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605611068 + 11605611069.

It is an arithmetic number, because the mean of its divisors is an integer number (11605611069).

Almost surely, 2^23211222137 is an apocalyptic number.

It is an amenable number.

23211222137 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211222137 is an equidigital number, since it uses as much as digits as its factorization.

23211222137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

Adding to 23211222137 its reverse (73122211232), we get a palindrome (96333433369).

The spelling of 23211222137 in words is "twenty-three billion, two hundred eleven million, two hundred twenty-two thousand, one hundred thirty-seven".