111011111108111 has 2 divisors, whose sum is σ = 111011111108112. Its totient is φ = 111011111108110.

The previous prime is 111011111108089. The next prime is 111011111108113. The reversal of 111011111108111 is 111801111110111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111011111108111 - 2¹⁰ = 111011111107087 is a prime.

Together with 111011111108113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111011111108113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505555554055 + 55505555554056.

It is an arithmetic number, because the mean of its divisors is an integer number (55505555554056).

Almost surely, 2^{111011111108111} is an apocalyptic number.

111011111108111 is a deficient number, since it is larger than the sum of its proper divisors (1).

111011111108111 is an equidigital number, since it uses as much as digits as its factorization.

111011111108111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 20.

Adding to 111011111108111 its reverse (111801111110111), we get a palindrome (222812222218222).

The spelling of 111011111108111 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, one hundred eight thousand, one hundred eleven".