12045031200 has 108 divisors (see below), whose sum is σ = 42473816658. Its totient is φ = 3212006400.

The previous prime is 12045031153. The next prime is 12045031223. The reversal of 12045031200 is 213054021.

12045031200 is a `hidden beast` number, since 12 + 0 + 450 + 3 + 1 + 200 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 7819511184 + 4225520016 = 88428^2 + 65004^2 .

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, 829261 + ... + 843660.

Almost surely, 2^12045031200 is an apocalyptic number.

12045031200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12045031200 is an abundant number, since it is smaller than the sum of its proper divisors (30428785458).

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

12045031200 is a wasteful number, since it uses less digits than its factorization.

12045031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672947 (or 1672931 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 12045031200 its reverse (213054021), we get a palindrome (12258085221).

The spelling of 12045031200 in words is "twelve billion, forty-five million, thirty-one thousand, two hundred".