110111209987 has 2 divisors, whose sum is σ = 110111209988. Its totient is φ = 110111209986.

The previous prime is 110111209973. The next prime is 110111210039. The reversal of 110111209987 is 789902111011.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110111209987 is a prime.

It is not a weakly prime, because it can be changed into another prime (110111206987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55055604993 + 55055604994.

It is an arithmetic number, because the mean of its divisors is an integer number (55055604994).

Almost surely, 2^110111209987 is an apocalyptic number.

110111209987 is a deficient number, since it is larger than the sum of its proper divisors (1).

110111209987 is an equidigital number, since it uses as much as digits as its factorization.

110111209987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 40.

The spelling of 110111209987 in words is "one hundred ten billion, one hundred eleven million, two hundred nine thousand, nine hundred eighty-seven".