12001111020312 has 64 divisors (see below), whose sum is σ = 30068996256000. Its totient is φ = 3991542311040.

The previous prime is 12001111020287. The next prime is 12001111020313. The reversal of 12001111020312 is 21302011110021.

It is a junction number, because it is equal to n+sod(n) for n = 12001111020291 and 12001111020300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001111020313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250463637 + ... + 250511547.

It is an arithmetic number, because the mean of its divisors is an integer number (469828066500).

Almost surely, 2^{12001111020312} is an apocalyptic number.

12001111020312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12001111020312 is an abundant number, since it is smaller than the sum of its proper divisors (18067885235688).

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

12001111020312 is a wasteful number, since it uses less digits than its factorization.

12001111020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70736 (or 70732 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 12001111020312 its reverse (21302011110021), we get a palindrome (33303122130333).

The spelling of 12001111020312 in words is "twelve trillion, one billion, one hundred eleven million, twenty thousand, three hundred twelve".