23221113961 has 2 divisors, whose sum is σ = 23221113962. Its totient is φ = 23221113960.

The previous prime is 23221113917. The next prime is 23221114009. The reversal of 23221113961 is 16931112232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20938090000 + 2283023961 = 144700^2 + 47781^2 .

It is a cyclic number.

It is not a de Polignac number, because 23221113961 - 2¹³ = 23221105769 is a prime.

It is a super-3 number, since 3×23221113961³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (23221117961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610556980 + 11610556981.

It is an arithmetic number, because the mean of its divisors is an integer number (11610556981).

Almost surely, 2^23221113961 is an apocalyptic number.

It is an amenable number.

23221113961 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221113961 is an equidigital number, since it uses as much as digits as its factorization.

23221113961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 31.

The spelling of 23221113961 in words is "twenty-three billion, two hundred twenty-one million, one hundred thirteen thousand, nine hundred sixty-one".