12111111010112 has 112 divisors (see below), whose sum is σ = 24504369177600. Its totient is φ = 5937341921280.

The previous prime is 12111111010049. The next prime is 12111111010123. The reversal of 12111111010112 is 21101011111121.

It is a super-2 number, since 2×12111111010112² (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 15 ways as a sum of consecutive naturals, for example, 2912022689 + ... + 2912026847.

Almost surely, 2^{12111111010112} 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 12111111010112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12252184588800).

12111111010112 is an abundant number, since it is smaller than the sum of its proper divisors (12393258167488).

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

12111111010112 is a wasteful number, since it uses less digits than its factorization.

12111111010112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6064 (or 6054 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 12111111010112 its reverse (21101011111121), we get a palindrome (33212122121233).

The spelling of 12111111010112 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, ten thousand, one hundred twelve".