12123012300 has 72 divisors (see below), whose sum is σ = 40086767616. Its totient is φ = 2770973760.

The previous prime is 12123012299. The next prime is 12123012311. The reversal of 12123012300 is 321032121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12123012300.

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, 2884332 + ... + 2888531.

Almost surely, 2^12123012300 is an apocalyptic number.

12123012300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12123012300 is an abundant number, since it is smaller than the sum of its proper divisors (27963755316).

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

12123012300 is a wasteful number, since it uses less digits than its factorization.

12123012300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772887 (or 5772880 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12123012300 its reverse (321032121), we get a palindrome (12444044421).

The spelling of 12123012300 in words is "twelve billion, one hundred twenty-three million, twelve thousand, three hundred".