11111119911 has 12 divisors (see below), whose sum is σ = 16101677592. Its totient is φ = 7383283056.

The previous prime is 11111119907. The next prime is 11111119919. The reversal of 11111119911 is 11991111111.

It is not a de Polignac number, because 11111119911 - 2² = 11111119907 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111119919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2007936 + ... + 2013461.

It is an arithmetic number, because the mean of its divisors is an integer number (1341806466).

Almost surely, 2^11111119911 is an apocalyptic number.

11111119911 is a deficient number, since it is larger than the sum of its proper divisors (4990557681).

11111119911 is a wasteful number, since it uses less digits than its factorization.

11111119911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021710 (or 4021707 counting only the distinct ones).

The product of its digits is 81, while the sum is 27.

The spelling of 11111119911 in words is "eleven billion, one hundred eleven million, one hundred nineteen thousand, nine hundred eleven".