12204123 has 4 divisors (see below), whose sum is σ = 16272168. Its totient is φ = 8136080.

The previous prime is 12204109. The next prime is 12204139. The reversal of 12204123 is 32140221.

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 12204123 - 2¹⁷ = 12073051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12204103) 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 3 ways as a sum of consecutive naturals, for example, 2034018 + ... + 2034023.

It is an arithmetic number, because the mean of its divisors is an integer number (4068042).

Almost surely, 2^12204123 is an apocalyptic number.

12204123 is a deficient number, since it is larger than the sum of its proper divisors (4068045).

12204123 is an equidigital number, since it uses as much as digits as its factorization.

12204123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4068044.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 12204123 is about 3493.4399951910. The cubic root of 12204123 is about 230.2336818416.

Adding to 12204123 its reverse (32140221), we get a palindrome (44344344).

The spelling of 12204123 in words is "twelve million, two hundred four thousand, one hundred twenty-three".