11111111000111 has 4 divisors (see below), whose sum is σ = 11198600063232. Its totient is φ = 11023621936992.

The previous prime is 11111111000083. The next prime is 11111111000113. The reversal of 11111111000111 is 11100011111111.

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

It is a cyclic number.

It is not a de Polignac number, because 11111111000111 - 2⁶ = 11111111000047 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11111111000092 and 11111111000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111111000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43744531370 + ... + 43744531623.

It is an arithmetic number, because the mean of its divisors is an integer number (2799650015808).

Almost surely, 2^{11111111000111} is an apocalyptic number.

11111111000111 is a deficient number, since it is larger than the sum of its proper divisors (87489063121).

11111111000111 is an equidigital number, since it uses as much as digits as its factorization.

11111111000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87489063120.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11111111000111 its reverse (11100011111111), we get a palindrome (22211122111222).

It can be divided in two parts, 11111111000 and 111, that added together give a palindrome (11111111111).

The spelling of 11111111000111 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred eleven", and thus it is an aban number.