23215251211 has 2 divisors, whose sum is σ = 23215251212. Its totient is φ = 23215251210.

The previous prime is 23215251179. The next prime is 23215251233. The reversal of 23215251211 is 11215251232.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23215251211 - 2⁵ = 23215251179 is a prime.

It is not a weakly prime, because it can be changed into another prime (23215251271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11607625605 + 11607625606.

It is an arithmetic number, because the mean of its divisors is an integer number (11607625606).

Almost surely, 2^23215251211 is an apocalyptic number.

23215251211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23215251211 is an equidigital number, since it uses as much as digits as its factorization.

23215251211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1200, while the sum is 25.

The spelling of 23215251211 in words is "twenty-three billion, two hundred fifteen million, two hundred fifty-one thousand, two hundred eleven".