12188023 has 4 divisors (see below), whose sum is σ = 12258648. Its totient is φ = 12117400.

The previous prime is 12188021. The next prime is 12188027. The reversal of 12188023 is 32088121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12188023 - 2¹ = 12188021 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 (12188021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35053 + ... + 35398.

It is an arithmetic number, because the mean of its divisors is an integer number (3064662).

Almost surely, 2^12188023 is an apocalyptic number.

12188023 is a deficient number, since it is larger than the sum of its proper divisors (70625).

12188023 is an equidigital number, since it uses as much as digits as its factorization.

12188023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70624.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 12188023 is about 3491.1349157545. The cubic root of 12188023 is about 230.1323938454.

The spelling of 12188023 in words is "twelve million, one hundred eighty-eight thousand, twenty-three".