102001212101987 has 32 divisors (see below), whose sum is σ = 118597460567040. Its totient is φ = 86748766452000.

The previous prime is 102001212101981. The next prime is 102001212101993. The reversal of 102001212101987 is 789101212100201.

It is an interprime number because it is at equal distance from previous prime (102001212101981) and next prime (102001212101993).

It is a cyclic number.

It is not a de Polignac number, because 102001212101987 - 2³² = 101996917134691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102001212101981) 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 in 31 ways as a sum of consecutive naturals, for example, 35586812 + ... + 38346102.

It is an arithmetic number, because the mean of its divisors is an integer number (3706170642720).

Almost surely, 2^{102001212101987} is an apocalyptic number.

102001212101987 is a deficient number, since it is larger than the sum of its proper divisors (16596248465053).

102001212101987 is a wasteful number, since it uses less digits than its factorization.

102001212101987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761535.

The product of its (nonzero) digits is 4032, while the sum is 35.

The spelling of 102001212101987 in words is "one hundred two trillion, one billion, two hundred twelve million, one hundred one thousand, nine hundred eighty-seven".