12111112199999 has 4 divisors (see below), whose sum is σ = 12392765972136. Its totient is φ = 11829458427864.

The previous prime is 12111112199971. The next prime is 12111112200001. The reversal of 12111112199999 is 99999121111121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12111112199999 - 2¹⁶ = 12111112134463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111112199939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140826886004 + ... + 140826886089.

It is an arithmetic number, because the mean of its divisors is an integer number (3098191493034).

Almost surely, 2^{12111112199999} is an apocalyptic number.

12111112199999 is a deficient number, since it is larger than the sum of its proper divisors (281653772137).

12111112199999 is an equidigital number, since it uses as much as digits as its factorization.

12111112199999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281653772136.

The product of its digits is 236196, while the sum is 56.

The spelling of 12111112199999 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred ninety-nine thousand, nine hundred ninety-nine".