9999002111 has 16 divisors (see below), whose sum is σ = 12075720960. Its totient is φ = 8087869440.

The previous prime is 9999002099. The next prime is 9999002147. The reversal of 9999002111 is 1112009999.

It is a happy number.

It is not a de Polignac number, because 9999002111 - 2¹⁸ = 9998739967 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 (9999002161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112085 + ... + 180446.

It is an arithmetic number, because the mean of its divisors is an integer number (754732560).

Almost surely, 2^9999002111 is an apocalyptic number.

9999002111 is a deficient number, since it is larger than the sum of its proper divisors (2076718849).

9999002111 is a wasteful number, since it uses less digits than its factorization.

9999002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292814.

The product of its (nonzero) digits is 13122, while the sum is 41.

The square root of 9999002111 is about 99995.0104305210. The cubic root of 9999002111 is about 2154.3630247588.

The spelling of 9999002111 in words is "nine billion, nine hundred ninety-nine million, two thousand, one hundred eleven".