23120111 has 12 divisors (see below), whose sum is σ = 27522792. Its totient is φ = 19354608.

The previous prime is 23120039. The next prime is 23120171. The reversal of 23120111 is 11102132.

It is not a de Polignac number, because 23120111 - 2¹⁴ = 23103727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23120092 and 23120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23120171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3380 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (2293566).

Almost surely, 2^23120111 is an apocalyptic number.

23120111 is a deficient number, since it is larger than the sum of its proper divisors (4402681).

23120111 is a wasteful number, since it uses less digits than its factorization.

23120111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11030 (or 11023 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 23120111 is about 4808.3376545330. The cubic root of 23120111 is about 284.8808817891.

Adding to 23120111 its reverse (11102132), we get a palindrome (34222243).

The spelling of 23120111 in words is "twenty-three million, one hundred twenty thousand, one hundred eleven".