23101112191 has 2 divisors, whose sum is σ = 23101112192. Its totient is φ = 23101112190.

The previous prime is 23101112189. The next prime is 23101112231. The reversal of 23101112191 is 19121110132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23101112191 - 2¹ = 23101112189 is a prime.

It is a super-2 number, since 2×23101112191² (a number of 22 digits) contains 22 as substring.

Together with 23101112189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23101116191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11550556095 + 11550556096.

It is an arithmetic number, because the mean of its divisors is an integer number (11550556096).

Almost surely, 2^23101112191 is an apocalyptic number.

23101112191 is a deficient number, since it is larger than the sum of its proper divisors (1).

23101112191 is an equidigital number, since it uses as much as digits as its factorization.

23101112191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 23101112191 in words is "twenty-three billion, one hundred one million, one hundred twelve thousand, one hundred ninety-one".