12117204 has 72 divisors (see below), whose sum is σ = 34358688. Its totient is φ = 3568320.

The previous prime is 12117121. The next prime is 12117221. The reversal of 12117204 is 40271121.

12117204 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14239 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (477204).

Almost surely, 2^12117204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12117204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17179344).

12117204 is an abundant number, since it is smaller than the sum of its proper divisors (22241484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12117204 is a wasteful number, since it uses less digits than its factorization.

12117204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 12117204 is about 3480.9774489359. The cubic root of 12117204 is about 229.6857965444.

Adding to 12117204 its reverse (40271121), we get a palindrome (52388325).

It can be divided in two parts, 12117 and 204, that added together give a palindrome (12321).

The spelling of 12117204 in words is "twelve million, one hundred seventeen thousand, two hundred four".