110810991001 has 2 divisors, whose sum is σ = 110810991002. Its totient is φ = 110810991000.

The previous prime is 110810990987. The next prime is 110810991079. The reversal of 110810991001 is 100199018011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110638725376 + 172265625 = 332624^2 + 13125^2 .

It is a cyclic number.

It is not a de Polignac number, because 110810991001 - 2⁹ = 110810990489 is a prime.

It is not a weakly prime, because it can be changed into another prime (110810991091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55405495500 + 55405495501.

It is an arithmetic number, because the mean of its divisors is an integer number (55405495501).

Almost surely, 2^110810991001 is an apocalyptic number.

It is an amenable number.

110810991001 is a deficient number, since it is larger than the sum of its proper divisors (1).

110810991001 is an equidigital number, since it uses as much as digits as its factorization.

110810991001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 110810991001 in words is "one hundred ten billion, eight hundred ten million, nine hundred ninety-one thousand, one".