111110099081 has 2 divisors, whose sum is σ = 111110099082. Its totient is φ = 111110099080.

The previous prime is 111110099071. The next prime is 111110099117. The reversal of 111110099081 is 180990011111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103285104400 + 7824994681 = 321380^2 + 88459^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111110099081 is a prime.

It is a super-2 number, since 2×111110099081² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111110099011) 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, 55555049540 + 55555049541.

It is an arithmetic number, because the mean of its divisors is an integer number (55555049541).

Almost surely, 2^111110099081 is an apocalyptic number.

It is an amenable number.

111110099081 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110099081 is an equidigital number, since it uses as much as digits as its factorization.

111110099081 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 32.

The spelling of 111110099081 in words is "one hundred eleven billion, one hundred ten million, ninety-nine thousand, eighty-one".