111001100101091 has 2 divisors, whose sum is σ = 111001100101092. Its totient is φ = 111001100101090.

The previous prime is 111001100101049. The next prime is 111001100101117. The reversal of 111001100101091 is 190101001100111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111001100101091 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111001100101291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55500550050545 + 55500550050546.

It is an arithmetic number, because the mean of its divisors is an integer number (55500550050546).

Almost surely, 2^{111001100101091} is an apocalyptic number.

111001100101091 is a deficient number, since it is larger than the sum of its proper divisors (1).

111001100101091 is an equidigital number, since it uses as much as digits as its factorization.

111001100101091 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 111001100101091 in words is "one hundred eleven trillion, one billion, one hundred million, one hundred one thousand, ninety-one".