111000011009999 has 4 divisors (see below), whose sum is σ = 111000783859800. Its totient is φ = 110999238160200.

The previous prime is 111000011009947. The next prime is 111000011010019. The reversal of 111000011009999 is 999900110000111.

It is a happy number.

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 111000011009999 - 2²⁸ = 110999742574543 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000011009929) 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, 386209424 + ... + 386496725.

It is an arithmetic number, because the mean of its divisors is an integer number (27750195964950).

Almost surely, 2^{111000011009999} is an apocalyptic number.

111000011009999 is a deficient number, since it is larger than the sum of its proper divisors (772849801).

111000011009999 is an equidigital number, since it uses as much as digits as its factorization.

111000011009999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772849800.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 111000011009999 in words is "one hundred eleven trillion, eleven million, nine thousand, nine hundred ninety-nine".