210002010021987 has 32 divisors (see below), whose sum is σ = 294141586733568. Its totient is φ = 133016481455616.

The previous prime is 210002010021977. The next prime is 210002010022031. The reversal of 210002010021987 is 789120010200012.

It is not a de Polignac number, because 210002010021987 - 2²³ = 210002001633379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (210002010021907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8700048 + ... + 22264205.

It is an arithmetic number, because the mean of its divisors is an integer number (9191924585424).

Almost surely, 2^{210002010021987} is an apocalyptic number.

210002010021987 is a deficient number, since it is larger than the sum of its proper divisors (84139576711581).

210002010021987 is a wasteful number, since it uses less digits than its factorization.

210002010021987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30964939.

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

Adding to 210002010021987 its reverse (789120010200012), we get a palindrome (999122020221999).

The spelling of 210002010021987 in words is "two hundred ten trillion, two billion, ten million, twenty-one thousand, nine hundred eighty-seven".