110001010999981 has 2 divisors, whose sum is σ = 110001010999982. Its totient is φ = 110001010999980.

The previous prime is 110001010999963. The next prime is 110001011000129. The reversal of 110001010999981 is 189999010100011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78084262440900 + 31916748559081 = 8836530^2 + 5649491^2 .

It is a cyclic number.

It is not a de Polignac number, because 110001010999981 - 2⁷ = 110001010999853 is a prime.

It is a super-2 number, since 2×110001010999981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110001010991981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55000505499990 + 55000505499991.

It is an arithmetic number, because the mean of its divisors is an integer number (55000505499991).

Almost surely, 2^{110001010999981} is an apocalyptic number.

It is an amenable number.

110001010999981 is a deficient number, since it is larger than the sum of its proper divisors (1).

110001010999981 is an equidigital number, since it uses as much as digits as its factorization.

110001010999981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 49.

The spelling of 110001010999981 in words is "one hundred ten trillion, one billion, ten million, nine hundred ninety-nine thousand, nine hundred eighty-one".