110110110010991 has 2 divisors, whose sum is σ = 110110110010992. Its totient is φ = 110110110010990.

The previous prime is 110110110010981. The next prime is 110110110011009. The reversal of 110110110010991 is 199010011011011.

It is a weak prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 166010011011011 and 110110110010661.

It is a cyclic number.

It is not a de Polignac number, because 110110110010991 - 2²⁶ = 110110042902127 is a prime.

It is a super-3 number, since 3×110110110010991³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110110110010991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110110110010981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055055005495 + 55055055005496.

It is an arithmetic number, because the mean of its divisors is an integer number (55055055005496).

Almost surely, 2^{110110110010991} is an apocalyptic number.

110110110010991 is a deficient number, since it is larger than the sum of its proper divisors (1).

110110110010991 is an equidigital number, since it uses as much as digits as its factorization.

110110110010991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 26.

The spelling of 110110110010991 in words is "one hundred ten trillion, one hundred ten billion, one hundred ten million, ten thousand, nine hundred ninety-one".