23188121 has 8 divisors (see below), whose sum is σ = 25725600. Its totient is φ = 20722240.

The previous prime is 23188111. The next prime is 23188127. The reversal of 23188121 is 12188132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-23188121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23188127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17216 + ... + 18513.

It is an arithmetic number, because the mean of its divisors is an integer number (3215700).

Almost surely, 2^23188121 is an apocalyptic number.

It is an amenable number.

23188121 is a deficient number, since it is larger than the sum of its proper divisors (2537479).

23188121 is a wasteful number, since it uses less digits than its factorization.

23188121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35799.

The product of its digits is 768, while the sum is 26.

The square root of 23188121 is about 4815.4045520600. The cubic root of 23188121 is about 285.1599430532.

The spelling of 23188121 in words is "twenty-three million, one hundred eighty-eight thousand, one hundred twenty-one".