111010000100981 has 2 divisors, whose sum is σ = 111010000100982. Its totient is φ = 111010000100980.

The previous prime is 111010000100977. The next prime is 111010000101001. The reversal of 111010000100981 is 189001000010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93988352068081 + 17021648032900 = 9694759^2 + 4125730^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010000100981 - 2² = 111010000100977 is a prime.

It is a super-2 number, since 2×111010000100981² (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 (111010000100971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505000050490 + 55505000050491.

It is an arithmetic number, because the mean of its divisors is an integer number (55505000050491).

Almost surely, 2^{111010000100981} is an apocalyptic number.

It is an amenable number.

111010000100981 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010000100981 is an equidigital number, since it uses as much as digits as its factorization.

111010000100981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 23.

The spelling of 111010000100981 in words is "one hundred eleven trillion, ten billion, one hundred thousand, nine hundred eighty-one".