11111120999 has 8 divisors (see below), whose sum is σ = 12241236240. Its totient is φ = 10001008000.

The previous prime is 11111120981. The next prime is 11111121019. The reversal of 11111120999 is 99902111111.

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 11111120999 - 2²⁴ = 11094343783 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 (11111120939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4999394 + ... + 5001615.

It is an arithmetic number, because the mean of its divisors is an integer number (1530154530).

Almost surely, 2^11111120999 is an apocalyptic number.

11111120999 is a deficient number, since it is larger than the sum of its proper divisors (1130115241).

11111120999 is a wasteful number, since it uses less digits than its factorization.

11111120999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10001121.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 11111120999 in words is "eleven billion, one hundred eleven million, one hundred twenty thousand, nine hundred ninety-nine".