12130021312 has 14 divisors (see below), whose sum is σ = 24070511168. Its totient is φ = 6065010624.

The previous prime is 12130021307. The next prime is 12130021327. The reversal of 12130021312 is 21312003121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94765728 + ... + 94765855.

Almost surely, 2^12130021312 is an apocalyptic number.

It is an amenable number.

12130021312 is a deficient number, since it is larger than the sum of its proper divisors (11940489856).

12130021312 is an equidigital number, since it uses as much as digits as its factorization.

12130021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189531595 (or 189531585 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12130021312 its reverse (21312003121), we get a palindrome (33442024433).

The spelling of 12130021312 in words is "twelve billion, one hundred thirty million, twenty-one thousand, three hundred twelve".