11111001000111 has 24 divisors (see below), whose sum is σ = 16308406274160. Its totient is φ = 7288594085376.

The previous prime is 11111001000083. The next prime is 11111001000133. The reversal of 11111001000111 is 11100010011111.

11111001000111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111001000111 - 2⁹ = 11111000999599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111001000093 and 11111001000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111001000611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36633301 + ... + 36935358.

It is an arithmetic number, because the mean of its divisors is an integer number (679516928090).

Almost surely, 2^{11111001000111} is an apocalyptic number.

11111001000111 is a deficient number, since it is larger than the sum of its proper divisors (5197405274049).

11111001000111 is a wasteful number, since it uses less digits than its factorization.

11111001000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73568935 (or 73568932 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11111001000111 its reverse (11100010011111), we get a palindrome (22211011011222).

The spelling of 11111001000111 in words is "eleven trillion, one hundred eleven billion, one million, one hundred eleven", and thus it is an aban number.