11111001000109 has 4 divisors (see below), whose sum is σ = 11494138965660. Its totient is φ = 10727863034560.

The previous prime is 11111001000083. The next prime is 11111001000133. The reversal of 11111001000109 is 90100010011111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8739431800009 + 2371569200100 = 2956253^2 + 1539990^2 .

It is a cyclic number.

It is not a de Polignac number, because 11111001000109 - 2⁹ = 11111000999597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11111001000092 and 11111001000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111001000149) 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, 191568982732 + ... + 191568982789.

It is an arithmetic number, because the mean of its divisors is an integer number (2873534741415).

Almost surely, 2^{11111001000109} is an apocalyptic number.

It is an amenable number.

11111001000109 is a deficient number, since it is larger than the sum of its proper divisors (383137965551).

11111001000109 is an equidigital number, since it uses as much as digits as its factorization.

11111001000109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383137965550.

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

It can be divided in two parts, 1111100 and 1000109, that added together give a square (2111209 = 1453²).

The spelling of 11111001000109 in words is "eleven trillion, one hundred eleven billion, one million, one hundred nine", and thus it is an aban number.