110101000991 has 2 divisors, whose sum is σ = 110101000992. Its totient is φ = 110101000990.

The previous prime is 110101000969. The next prime is 110101001009. The reversal of 110101000991 is 199000101011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 110101000991 - 2⁶ = 110101000927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110101000951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55050500495 + 55050500496.

It is an arithmetic number, because the mean of its divisors is an integer number (55050500496).

Almost surely, 2^110101000991 is an apocalyptic number.

110101000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110101000991 is an equidigital number, since it uses as much as digits as its factorization.

110101000991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 110101000991 in words is "one hundred ten billion, one hundred one million, nine hundred ninety-one", and thus it is an aban number.