12013031200 has 72 divisors (see below), whose sum is σ = 30870367920. Its totient is φ = 4552300800.

The previous prime is 12013031197. The next prime is 12013031207. The reversal of 12013031200 is 213031021.

It is a super-2 number, since 2×12013031200² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12013031207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379966 + ... + 410365.

It is an arithmetic number, because the mean of its divisors is an integer number (428755110).

Almost surely, 2^12013031200 is an apocalyptic number.

12013031200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12013031200 is an abundant number, since it is smaller than the sum of its proper divisors (18857336720).

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

12013031200 is a wasteful number, since it uses less digits than its factorization.

12013031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790370 (or 790357 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12013031200 its reverse (213031021), we get a palindrome (12226062221).

The spelling of 12013031200 in words is "twelve billion, thirteen million, thirty-one thousand, two hundred".