23252221961 has 2 divisors, whose sum is σ = 23252221962. Its totient is φ = 23252221960.

The previous prime is 23252221939. The next prime is 23252222017. The reversal of 23252221961 is 16912225232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18969828361 + 4282393600 = 137731^2 + 65440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23252221961 is a prime.

It is a super-2 number, since 2×23252221961² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23252221931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11626110980 + 11626110981.

It is an arithmetic number, because the mean of its divisors is an integer number (11626110981).

Almost surely, 2^23252221961 is an apocalyptic number.

It is an amenable number.

23252221961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23252221961 is an equidigital number, since it uses as much as digits as its factorization.

23252221961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The spelling of 23252221961 in words is "twenty-three billion, two hundred fifty-two million, two hundred twenty-one thousand, nine hundred sixty-one".