23211211291 has 2 divisors, whose sum is σ = 23211211292. Its totient is φ = 23211211290.

The previous prime is 23211211267. The next prime is 23211211393. The reversal of 23211211291 is 19211211232.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23211211291 - 2⁵ = 23211211259 is a prime.

It is not a weakly prime, because it can be changed into another prime (23211211241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11605605645 + 11605605646.

It is an arithmetic number, because the mean of its divisors is an integer number (11605605646).

Almost surely, 2^23211211291 is an apocalyptic number.

23211211291 is a deficient number, since it is larger than the sum of its proper divisors (1).

23211211291 is an equidigital number, since it uses as much as digits as its factorization.

23211211291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The spelling of 23211211291 in words is "twenty-three billion, two hundred eleven million, two hundred eleven thousand, two hundred ninety-one".