110099981 has 2 divisors, whose sum is σ = 110099982. Its totient is φ = 110099980.

The previous prime is 110099963. The next prime is 110099993. The reversal of 110099981 is 189990011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67732900 + 42367081 = 8230^2 + 6509^2 .

It is a cyclic number.

It is not a de Polignac number, because 110099981 - 2⁶ = 110099917 is a prime.

It is a super-2 number, since 2×110099981² = 24244011632400722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110099581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55049990 + 55049991.

It is an arithmetic number, because the mean of its divisors is an integer number (55049991).

Almost surely, 2^110099981 is an apocalyptic number.

It is an amenable number.

110099981 is a deficient number, since it is larger than the sum of its proper divisors (1).

110099981 is an equidigital number, since it uses as much as digits as its factorization.

110099981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 110099981 is about 10492.8538062817. The cubic root of 110099981 is about 479.2871087010.

The spelling of 110099981 in words is "one hundred ten million, ninety-nine thousand, nine hundred eighty-one".