23112120111 has 16 divisors (see below), whose sum is σ = 31884267360. Its totient is φ = 14874209280.

The previous prime is 23112120107. The next prime is 23112120113. The reversal of 23112120111 is 11102121132.

It is not a de Polignac number, because 23112120111 - 2² = 23112120107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23112120113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575751 + ... + 614583.

It is an arithmetic number, because the mean of its divisors is an integer number (1992766710).

Almost surely, 2^23112120111 is an apocalyptic number.

23112120111 is a deficient number, since it is larger than the sum of its proper divisors (8772147249).

23112120111 is a wasteful number, since it uses less digits than its factorization.

23112120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45706.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 23112120111 its reverse (11102121132), we get a palindrome (34214241243).

The spelling of 23112120111 in words is "twenty-three billion, one hundred twelve million, one hundred twenty thousand, one hundred eleven".