11111109011 has 2 divisors, whose sum is σ = 11111109012. Its totient is φ = 11111109010.

The previous prime is 11111108993. The next prime is 11111109013. The reversal of 11111109011 is 11090111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111109011 - 2¹⁸ = 11110846867 is a prime.

Together with 11111109013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11111109013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555554505 + 5555554506.

It is an arithmetic number, because the mean of its divisors is an integer number (5555554506).

Almost surely, 2^11111109011 is an apocalyptic number.

11111109011 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111109011 is an equidigital number, since it uses as much as digits as its factorization.

11111109011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 17.

The spelling of 11111109011 in words is "eleven billion, one hundred eleven million, one hundred nine thousand, eleven".