110110101009991 has 2 divisors, whose sum is σ = 110110101009992. Its totient is φ = 110110101009990.

The previous prime is 110110101009977. The next prime is 110110101010067. The reversal of 110110101009991 is 199900101011011.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 110110101009991 - 2⁵ = 110110101009959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110110101009691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055050504995 + 55055050504996.

It is an arithmetic number, because the mean of its divisors is an integer number (55055050504996).

Almost surely, 2^{110110101009991} is an apocalyptic number.

110110101009991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110110101009991 is an equidigital number, since it uses as much as digits as its factorization.

110110101009991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 34.

The spelling of 110110101009991 in words is "one hundred ten trillion, one hundred ten billion, one hundred one million, nine thousand, nine hundred ninety-one".