11111112199 has 4 divisors (see below), whose sum is σ = 12121213320. Its totient is φ = 10101011080.

The previous prime is 11111112191. The next prime is 11111112209. The reversal of 11111112199 is 99121111111.

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 11111112199 - 2³ = 11111112191 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 (11111112191) 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, 505050544 + ... + 505050565.

It is an arithmetic number, because the mean of its divisors is an integer number (3030303330).

Almost surely, 2^11111112199 is an apocalyptic number.

11111112199 is a deficient number, since it is larger than the sum of its proper divisors (1010101121).

11111112199 is a wasteful number, since it uses less digits than its factorization.

11111112199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010101120.

The product of its digits is 162, while the sum is 28.

The spelling of 11111112199 in words is "eleven billion, one hundred eleven million, one hundred twelve thousand, one hundred ninety-nine".