111002101121987 has 2 divisors, whose sum is σ = 111002101121988. Its totient is φ = 111002101121986.

The previous prime is 111002101121981. The next prime is 111002101122037. The reversal of 111002101121987 is 789121101200111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111002101121987 - 2⁴ = 111002101121971 is a prime.

It is not a weakly prime, because it can be changed into another prime (111002101121981) 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, 55501050560993 + 55501050560994.

It is an arithmetic number, because the mean of its divisors is an integer number (55501050560994).

Almost surely, 2^{111002101121987} is an apocalyptic number.

111002101121987 is a deficient number, since it is larger than the sum of its proper divisors (1).

111002101121987 is an equidigital number, since it uses as much as digits as its factorization.

111002101121987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 35.

The spelling of 111002101121987 in words is "one hundred eleven trillion, two billion, one hundred one million, one hundred twenty-one thousand, nine hundred eighty-seven".