23012122111 has 16 divisors (see below), whose sum is σ = 25723692288. Its totient is φ = 20404100800.

The previous prime is 23012122087. The next prime is 23012122129. The reversal of 23012122111 is 11122121032.

It is a cyclic number.

It is not a de Polignac number, because 23012122111 - 2⁷ = 23012121983 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 (23012125111) 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, 2820540 + ... + 2828686.

It is an arithmetic number, because the mean of its divisors is an integer number (1607730768).

Almost surely, 2^23012122111 is an apocalyptic number.

23012122111 is a deficient number, since it is larger than the sum of its proper divisors (2711570177).

23012122111 is a wasteful number, since it uses less digits than its factorization.

23012122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14462.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 23012122111 its reverse (11122121032), we get a palindrome (34134243143).

The spelling of 23012122111 in words is "twenty-three billion, twelve million, one hundred twenty-two thousand, one hundred eleven".