23112112312111 has 4 divisors (see below), whose sum is σ = 23112121935672. Its totient is φ = 23112102688552.

The previous prime is 23112112312109. The next prime is 23112112312141. The reversal of 23112112312111 is 11121321121132.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23112112312111 - 2¹ = 23112112312109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112112312141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2101740 + ... + 7116286.

It is an arithmetic number, because the mean of its divisors is an integer number (5778030483918).

Almost surely, 2^{23112112312111} is an apocalyptic number.

23112112312111 is a deficient number, since it is larger than the sum of its proper divisors (9623561).

23112112312111 is an equidigital number, since it uses as much as digits as its factorization.

23112112312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9623560.

The product of its digits is 144, while the sum is 22.

Adding to 23112112312111 its reverse (11121321121132), we get a palindrome (34233433433243).

The spelling of 23112112312111 in words is "twenty-three trillion, one hundred twelve billion, one hundred twelve million, three hundred twelve thousand, one hundred eleven".