999000111011111 has 8 divisors (see below), whose sum is σ = 1089845038888704. Its totient is φ = 908159639128120.

The previous prime is 999000111011099. The next prime is 999000111011117. The reversal of 999000111011111 is 111110111000999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999000111011111 - 2²² = 999000106816807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999000111011117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113529871 + ... + 1114426656.

It is an arithmetic number, because the mean of its divisors is an integer number (136230629861088).

Almost surely, 2^{999000111011111} is an apocalyptic number.

999000111011111 is a deficient number, since it is larger than the sum of its proper divisors (90844927877593).

999000111011111 is a wasteful number, since it uses less digits than its factorization.

999000111011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227997301.

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

The spelling of 999000111011111 in words is "nine hundred ninety-nine trillion, one hundred eleven million, eleven thousand, one hundred eleven".