111110100109999 has 2 divisors, whose sum is σ = 111110100110000. Its totient is φ = 111110100109998.

The previous prime is 111110100109997. The next prime is 111110100110047. The reversal of 111110100109999 is 999901001011111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111110100109999 - 2¹ = 111110100109997 is a prime.

Together with 111110100109997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111110100109993) 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, 55555050054999 + 55555050055000.

It is an arithmetic number, because the mean of its divisors is an integer number (55555050055000).

Almost surely, 2^{111110100109999} is an apocalyptic number.

111110100109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

111110100109999 is an equidigital number, since it uses as much as digits as its factorization.

111110100109999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 43.

The spelling of 111110100109999 in words is "one hundred eleven trillion, one hundred ten billion, one hundred million, one hundred nine thousand, nine hundred ninety-nine".