110111101100981 has 2 divisors, whose sum is σ = 110111101100982. Its totient is φ = 110111101100980.

The previous prime is 110111101100951. The next prime is 110111101101019. The reversal of 110111101100981 is 189001101111011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82185266540881 + 27925834560100 = 9065609^2 + 5284490^2 .

It is a cyclic number.

It is not a de Polignac number, because 110111101100981 - 2²² = 110111096906677 is a prime.

It is a super-2 number, since 2×110111101100981² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 110111101100981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110111101100911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055550550490 + 55055550550491.

It is an arithmetic number, because the mean of its divisors is an integer number (55055550550491).

Almost surely, 2^{110111101100981} is an apocalyptic number.

It is an amenable number.

110111101100981 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111101100981 is an equidigital number, since it uses as much as digits as its factorization.

110111101100981 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 26.

Adding to 110111101100981 its reverse (189001101111011), we get a palindrome (299112202211992).

The spelling of 110111101100981 in words is "one hundred ten trillion, one hundred eleven billion, one hundred one million, one hundred thousand, nine hundred eighty-one".