1111000000999 has 4 divisors (see below), whose sum is σ = 1269714286864. Its totient is φ = 952285715136.

The previous prime is 1111000000973. The next prime is 1111000001003. The reversal of 1111000000999 is 9990000001111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1111000000999 - 2¹¹ = 1110999998951 is a prime.

It is a Duffinian number.

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 1111000000999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111000000949) 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 3 ways as a sum of consecutive naturals, for example, 79357142922 + ... + 79357142935.

It is an arithmetic number, because the mean of its divisors is an integer number (317428571716).

Almost surely, 2^{1111000000999} is an apocalyptic number.

1111000000999 is a deficient number, since it is larger than the sum of its proper divisors (158714285865).

1111000000999 is an equidigital number, since it uses as much as digits as its factorization.

1111000000999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158714285864.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 1111000000999 in words is "one trillion, one hundred eleven billion, nine hundred ninety-nine", and thus it is an aban number.