23606772121 has 2 divisors, whose sum is σ = 23606772122. Its totient is φ = 23606772120.

The previous prime is 23606772113. The next prime is 23606772199. The reversal of 23606772121 is 12127760632.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15006250000 + 8600522121 = 122500^2 + 92739^2 .

It is a cyclic number.

It is not a de Polignac number, because 23606772121 - 2³ = 23606772113 is a prime.

It is not a weakly prime, because it can be changed into another prime (23606772421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11803386060 + 11803386061.

It is an arithmetic number, because the mean of its divisors is an integer number (11803386061).

Almost surely, 2^23606772121 is an apocalyptic number.

It is an amenable number.

23606772121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23606772121 is an equidigital number, since it uses as much as digits as its factorization.

23606772121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 23606772121 in words is "twenty-three billion, six hundred six million, seven hundred seventy-two thousand, one hundred twenty-one".