12001231112312 has 24 divisors (see below), whose sum is σ = 24366404886840. Its totient is φ = 5539029743520.

The previous prime is 12001231112291. The next prime is 12001231112317. The reversal of 12001231112312 is 21321113210021.

It is a super-2 number, since 2×12001231112312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001231112317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4438323764 + ... + 4438326467.

It is an arithmetic number, because the mean of its divisors is an integer number (1015266870285).

Almost surely, 2^{12001231112312} is an apocalyptic number.

It is an amenable number.

12001231112312 is an abundant number, since it is smaller than the sum of its proper divisors (12365173774528).

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

12001231112312 is a wasteful number, since it uses less digits than its factorization.

12001231112312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8876650263 (or 8876650246 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12001231112312 its reverse (21321113210021), we get a palindrome (33322344322333).

The spelling of 12001231112312 in words is "twelve trillion, one billion, two hundred thirty-one million, one hundred twelve thousand, three hundred twelve".