12031321213012 has 24 divisors (see below), whose sum is σ = 22575524549760. Its totient is φ = 5590129883520.

The previous prime is 12031321213007. The next prime is 12031321213123. The reversal of 12031321213012 is 21031212313021.

It is a super-2 number, since 2×12031321213012² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1119812314 + ... + 1119823057.

It is an arithmetic number, because the mean of its divisors is an integer number (940646856240).

Almost surely, 2^{12031321213012} is an apocalyptic number.

It is an amenable number.

12031321213012 is a deficient number, since it is larger than the sum of its proper divisors (10544203336748).

12031321213012 is a wasteful number, since it uses less digits than its factorization.

12031321213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239635471 (or 2239635469 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12031321213012 its reverse (21031212313021), we get a palindrome (33062533526033).

The spelling of 12031321213012 in words is "twelve trillion, thirty-one billion, three hundred twenty-one million, two hundred thirteen thousand, twelve".