9111111113 has 4 divisors (see below), whose sum is σ = 9811965828. Its totient is φ = 8410256400.

The previous prime is 9111111071. The next prime is 9111111127. The reversal of 9111111113 is 3111111119.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3111111119 = 41 ⋅75880759.

It can be written as a sum of positive squares in 2 ways, for example, as 2634563584 + 6476547529 = 51328^2 + 80477^2 .

It is not a de Polignac number, because 9111111113 - 2¹⁰ = 9111110089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9111111133) 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, 350427338 + ... + 350427363.

It is an arithmetic number, because the mean of its divisors is an integer number (2452991457).

Almost surely, 2^9111111113 is an apocalyptic number.

It is an amenable number.

9111111113 is a deficient number, since it is larger than the sum of its proper divisors (700854715).

9111111113 is a wasteful number, since it uses less digits than its factorization.

9111111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700854714.

The product of its digits is 27, while the sum is 20.

The square root of 9111111113 is about 95452.1404317368. The cubic root of 9111111113 is about 2088.6088521638.

The spelling of 9111111113 in words is "nine billion, one hundred eleven million, one hundred eleven thousand, one hundred thirteen".