12003505200 has 90 divisors (see below), whose sum is σ = 41655509844. Its totient is φ = 3200933760.

The previous prime is 12003505177. The next prime is 12003505229. The reversal of 12003505200 is 250530021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (90).

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

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1663554 + ... + 1670753.

Almost surely, 2^12003505200 is an apocalyptic number.

12003505200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12003505200 is an abundant number, since it is smaller than the sum of its proper divisors (29652004644).

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

12003505200 is a wasteful number, since it uses less digits than its factorization.

12003505200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334331 (or 3334317 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The spelling of 12003505200 in words is "twelve billion, three million, five hundred five thousand, two hundred".