12111111001112 has 16 divisors (see below), whose sum is σ = 22713650056800. Its totient is φ = 6054137652640.

The previous prime is 12111111001109. The next prime is 12111111001163. The reversal of 12111111001112 is 21110011111121.

It is a super-2 number, since 2×12111111001112² (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 3 ways as a sum of consecutive naturals, for example, 177194687 + ... + 177263022.

It is an arithmetic number, because the mean of its divisors is an integer number (1419603128550).

Almost surely, 2^{12111111001112} is an apocalyptic number.

It is an amenable number.

12111111001112 is a deficient number, since it is larger than the sum of its proper divisors (10602539055688).

12111111001112 is a wasteful number, since it uses less digits than its factorization.

12111111001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354461986 (or 354461982 counting only the distinct ones).

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

Adding to 12111111001112 its reverse (21110011111121), we get a palindrome (33221122112233).

The spelling of 12111111001112 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, one thousand, one hundred twelve".