111111110000999 has 2 divisors, whose sum is σ = 111111110001000. Its totient is φ = 111111110000998.

The previous prime is 111111110000903. The next prime is 111111110001019. The reversal of 111111110000999 is 999000011111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111111110000999 - 2⁸ = 111111110000743 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111111110000899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55555555000499 + 55555555000500.

It is an arithmetic number, because the mean of its divisors is an integer number (55555555000500).

Almost surely, 2^{111111110000999} is an apocalyptic number.

111111110000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111111110000999 is an equidigital number, since it uses as much as digits as its factorization.

111111110000999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 35.

The spelling of 111111110000999 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, nine hundred ninety-nine", and thus it is an aban number.