111011111099999 has 4 divisors (see below), whose sum is σ = 121103030290920. Its totient is φ = 100919191909080.

The previous prime is 111011111099953. The next prime is 111011111100007. The reversal of 111011111099999 is 999990111110111.

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 111011111099999 - 2¹⁶ = 111011111034463 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111011111099999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011111099299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5045959595444 + ... + 5045959595465.

It is an arithmetic number, because the mean of its divisors is an integer number (30275757572730).

Almost surely, 2^{111011111099999} is an apocalyptic number.

111011111099999 is a deficient number, since it is larger than the sum of its proper divisors (10091919190921).

111011111099999 is a wasteful number, since it uses less digits than its factorization.

111011111099999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10091919190920.

The product of its (nonzero) digits is 59049, while the sum is 53.

The spelling of 111011111099999 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, ninety-nine thousand, nine hundred ninety-nine".