12001111020112 has 80 divisors (see below), whose sum is σ = 24150006999040. Its totient is φ = 5771293286400.

The previous prime is 12001111020103. The next prime is 12001111020163. The reversal of 12001111020112 is 21102011110021.

It is a happy number.

12001111020112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12001111020092 and 12001111020101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99401062 + ... + 99521722.

It is an arithmetic number, because the mean of its divisors is an integer number (301875087488).

Almost surely, 2^{12001111020112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001111020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12075003499520).

12001111020112 is an abundant number, since it is smaller than the sum of its proper divisors (12148895978928).

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

12001111020112 is a wasteful number, since it uses less digits than its factorization.

12001111020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121932 (or 121926 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12001111020112 its reverse (21102011110021), we get a palindrome (33103122130133).

The spelling of 12001111020112 in words is "twelve trillion, one billion, one hundred eleven million, twenty thousand, one hundred twelve".