102001210020987 has 4 divisors (see below), whose sum is σ = 136001613361320. Its totient is φ = 68000806680656.

The previous prime is 102001210020979. The next prime is 102001210021021. The reversal of 102001210020987 is 789020012100201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102001210020987 - 2³ = 102001210020979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102001210020967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17000201670162 + ... + 17000201670167.

It is an arithmetic number, because the mean of its divisors is an integer number (34000403340330).

Almost surely, 2^{102001210020987} is an apocalyptic number.

102001210020987 is a deficient number, since it is larger than the sum of its proper divisors (34000403340333).

102001210020987 is an equidigital number, since it uses as much as digits as its factorization.

102001210020987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34000403340332.

The product of its (nonzero) digits is 4032, while the sum is 33.

The spelling of 102001210020987 in words is "one hundred two trillion, one billion, two hundred ten million, twenty thousand, nine hundred eighty-seven".