111211100199 has 8 divisors (see below), whose sum is σ = 164757185520. Its totient is φ = 74140733448.

The previous prime is 111211100183. The next prime is 111211100201. The reversal of 111211100199 is 991001112111.

It is not a de Polignac number, because 111211100199 - 2⁴ = 111211100183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 4118929637 = 111211100199 / (1 + 1 + 1 + 2 + 1 + 1 + 1 + 0 + 0 + 1 + 9 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211100699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2059464792 + ... + 2059464845.

It is an arithmetic number, because the mean of its divisors is an integer number (20594648190).

Almost surely, 2^111211100199 is an apocalyptic number.

111211100199 is a deficient number, since it is larger than the sum of its proper divisors (53546085321).

111211100199 is an equidigital number, since it uses as much as digits as its factorization.

111211100199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4118929646 (or 4118929640 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 27.

The spelling of 111211100199 in words is "one hundred eleven billion, two hundred eleven million, one hundred thousand, one hundred ninety-nine".