12012131312 has 20 divisors (see below), whose sum is σ = 23592321840. Its totient is φ = 5923790208.

The previous prime is 12012131309. The next prime is 12012131323. The reversal of 12012131312 is 21313121021.

It is a congruent number.

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, 5141012 + ... + 5143347.

It is an arithmetic number, because the mean of its divisors is an integer number (1179616092).

Almost surely, 2^12012131312 is an apocalyptic number.

It is an amenable number.

12012131312 is a deficient number, since it is larger than the sum of its proper divisors (11580190528).

12012131312 is a wasteful number, since it uses less digits than its factorization.

12012131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284440 (or 10284434 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 12012131312 its reverse (21313121021), we get a palindrome (33325252333).

The spelling of 12012131312 in words is "twelve billion, twelve million, one hundred thirty-one thousand, three hundred twelve".