11110110999991 has 2 divisors, whose sum is σ = 11110110999992. Its totient is φ = 11110110999990.

The previous prime is 11110110999983. The next prime is 11110111000039. The reversal of 11110110999991 is 19999901101111.

11110110999991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11110110999991 - 2³ = 11110110999983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110110999901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555055499995 + 5555055499996.

It is an arithmetic number, because the mean of its divisors is an integer number (5555055499996).

Almost surely, 2^{11110110999991} is an apocalyptic number.

11110110999991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110110999991 is an equidigital number, since it uses as much as digits as its factorization.

11110110999991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59049, while the sum is 52.

The spelling of 11110110999991 in words is "eleven trillion, one hundred ten billion, one hundred ten million, nine hundred ninety-nine thousand, nine hundred ninety-one".