111100110010091 has 2 divisors, whose sum is σ = 111100110010092. Its totient is φ = 111100110010090.

The previous prime is 111100110010051. The next prime is 111100110010129. The reversal of 111100110010091 is 190010011001111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111100110010091 - 2¹⁰ = 111100110009067 is a prime.

It is not a weakly prime, because it can be changed into another prime (111100110010051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550055005045 + 55550055005046.

It is an arithmetic number, because the mean of its divisors is an integer number (55550055005046).

Almost surely, 2^{111100110010091} is an apocalyptic number.

111100110010091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100110010091 is an equidigital number, since it uses as much as digits as its factorization.

111100110010091 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 111100110010091 in words is "one hundred eleven trillion, one hundred billion, one hundred ten million, ten thousand, ninety-one".