12129272300 has 72 divisors (see below), whose sum is σ = 26968326000. Its totient is φ = 4732600320.

The previous prime is 12129272299. The next prime is 12129272321. The reversal of 12129272300 is 327292121.

12129272300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 4509356 + ... + 4512044.

Almost surely, 2^12129272300 is an apocalyptic number.

12129272300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12129272300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13484163000).

12129272300 is an abundant number, since it is smaller than the sum of its proper divisors (14839053700).

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

12129272300 is a wasteful number, since it uses less digits than its factorization.

12129272300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795 (or 3788 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 12129272300 in words is "twelve billion, one hundred twenty-nine million, two hundred seventy-two thousand, three hundred".