11111100109 has 8 divisors (see below), whose sum is σ = 11176293888. Its totient is φ = 11045979840.

The previous prime is 11111100089. The next prime is 11111100137. The reversal of 11111100109 is 90100111111.

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 11111100109 - 2³¹ = 8963616461 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111100092 and 11111100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111100149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300949 + ... + 335845.

It is an arithmetic number, because the mean of its divisors is an integer number (1397036736).

Almost surely, 2^11111100109 is an apocalyptic number.

It is an amenable number.

11111100109 is a deficient number, since it is larger than the sum of its proper divisors (65193779).

11111100109 is a wasteful number, since it uses less digits than its factorization.

11111100109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36755.

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

The spelling of 11111100109 in words is "eleven billion, one hundred eleven million, one hundred thousand, one hundred nine".