12009139200 has 396 divisors, whose sum is σ = 43952856480. Its totient is φ = 3131473920.

The previous prime is 12009139199. The next prime is 12009139217. The reversal of 12009139200 is 293190021.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10828246 + ... + 10829354.

Almost surely, 2^12009139200 is an apocalyptic number.

12009139200 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 12009139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21976428240).

12009139200 is an abundant number, since it is smaller than the sum of its proper divisors (31943717280).

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

12009139200 is a wasteful number, since it uses less digits than its factorization.

12009139200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192 (or 1166 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The spelling of 12009139200 in words is "twelve billion, nine million, one hundred thirty-nine thousand, two hundred".