23356206121 has 2 divisors, whose sum is σ = 23356206122. Its totient is φ = 23356206120.

The previous prime is 23356206091. The next prime is 23356206173. The reversal of 23356206121 is 12160265332.

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., 22500000000 + 856206121 = 150000^2 + 29261^2 .

It is a cyclic number.

It is not a de Polignac number, because 23356206121 - 2¹³ = 23356197929 is a prime.

It is not a weakly prime, because it can be changed into another prime (23356206191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11678103060 + 11678103061.

It is an arithmetic number, because the mean of its divisors is an integer number (11678103061).

Almost surely, 2^23356206121 is an apocalyptic number.

It is an amenable number.

23356206121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23356206121 is an equidigital number, since it uses as much as digits as its factorization.

23356206121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 23356206121 in words is "twenty-three billion, three hundred fifty-six million, two hundred six thousand, one hundred twenty-one".