1100011000999 has 2 divisors, whose sum is σ = 1100011001000. Its totient is φ = 1100011000998.

The previous prime is 1100011000993. The next prime is 1100011001021. The reversal of 1100011000999 is 9990001100011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1100011000999 - 2⁵ = 1100011000967 is a prime.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1100011000999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100011000993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550005500499 + 550005500500.

It is an arithmetic number, because the mean of its divisors is an integer number (550005500500).

Almost surely, 2^{1100011000999} is an apocalyptic number.

1100011000999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100011000999 is an equidigital number, since it uses as much as digits as its factorization.

1100011000999 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 31.

The spelling of 1100011000999 in words is "one trillion, one hundred billion, eleven million, nine hundred ninety-nine", and thus it is an aban number.