12123003204 has 144 divisors (see below), whose sum is σ = 33587124480. Its totient is φ = 3664362240.

The previous prime is 12123003203. The next prime is 12123003227. The reversal of 12123003204 is 40230032121.

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

It is not an unprimeable number, because it can be changed into a prime (12123003203) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13191057 + ... + 13191975.

It is an arithmetic number, because the mean of its divisors is an integer number (233243920).

Almost surely, 2^12123003204 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 12123003204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16793562240).

12123003204 is an abundant number, since it is smaller than the sum of its proper divisors (21464121276).

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

12123003204 is a wasteful number, since it uses less digits than its factorization.

12123003204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410 (or 1405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12123003204 its reverse (40230032121), we get a palindrome (52353035325).

The spelling of 12123003204 in words is "twelve billion, one hundred twenty-three million, three thousand, two hundred four".