12001013312 has 28 divisors (see below), whose sum is σ = 23820539100. Its totient is φ = 5998987776.

The previous prime is 12001013309. The next prime is 12001013333. The reversal of 12001013312 is 21331010021.

It can be written as a sum of positive squares in 2 ways, for example, as 2117472256 + 9883541056 = 46016^2 + 99416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256778 + ... + 299894.

Almost surely, 2^12001013312 is an apocalyptic number.

It is an amenable number.

12001013312 is a deficient number, since it is larger than the sum of its proper divisors (11819525788).

12001013312 is an equidigital number, since it uses as much as digits as its factorization.

12001013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47478 (or 47468 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 12001013312 its reverse (21331010021), we get a palindrome (33332023333).

The spelling of 12001013312 in words is "twelve billion, one million, thirteen thousand, three hundred twelve".