11100111209 has 8 divisors (see below), whose sum is σ = 12118564128. Its totient is φ = 10083216960.

The previous prime is 11100111181. The next prime is 11100111227. The reversal of 11100111209 is 90211100111.

It is a happy number.

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 11100111209 - 2²⁰ = 11099062633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100111509) 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, 374747 + ... + 403280.

It is an arithmetic number, because the mean of its divisors is an integer number (1514820516).

Almost surely, 2^11100111209 is an apocalyptic number.

It is an amenable number.

11100111209 is a deficient number, since it is larger than the sum of its proper divisors (1018452919).

11100111209 is a wasteful number, since it uses less digits than its factorization.

11100111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779335.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 11100111209 in words is "eleven billion, one hundred million, one hundred eleven thousand, two hundred nine".