12099285800 has 144 divisors (see below), whose sum is σ = 32898324060. Its totient is φ = 4126187520.

The previous prime is 12099285799. The next prime is 12099285901. The reversal of 12099285800 is 858299021.

It can be written as a sum of positive squares in 6 ways, for example, as 305760196 + 11793525604 = 17486^2 + 108598^2 .

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, 1888202 + ... + 1894598.

Almost surely, 2^12099285800 is an apocalyptic number.

12099285800 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 12099285800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16449162030).

12099285800 is an abundant number, since it is smaller than the sum of its proper divisors (20799038260).

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

12099285800 is a wasteful number, since it uses less digits than its factorization.

12099285800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6620 (or 6604 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 12099285800 in words is "twelve billion, ninety-nine million, two hundred eighty-five thousand, eight hundred".