9001000111111 has 4 divisors (see below), whose sum is σ = 9003934903912. Its totient is φ = 8998065318312.

The previous prime is 9001000111001. The next prime is 9001000111123. The reversal of 9001000111111 is 1111110001009.

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

It is a cyclic number.

It is not a de Polignac number, because 9001000111111 - 2²⁵ = 9000966556679 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 (9001000111151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467391800 + ... + 1467397933.

It is an arithmetic number, because the mean of its divisors is an integer number (2250983725978).

Almost surely, 2^{9001000111111} is an apocalyptic number.

9001000111111 is a deficient number, since it is larger than the sum of its proper divisors (2934792801).

9001000111111 is a wasteful number, since it uses less digits than its factorization.

9001000111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934792800.

The product of its (nonzero) digits is 9, while the sum is 16.

The spelling of 9001000111111 in words is "nine trillion, one billion, one hundred eleven thousand, one hundred eleven".