210002102001001 has 12 divisors (see below), whose sum is σ = 228786134191104. Its totient is φ = 192531638496600.

The previous prime is 210002102000987. The next prime is 210002102001007. The reversal of 210002102001001 is 100100201200012.

It is not a de Polignac number, because 210002102001001 - 2⁹ = 210002102000489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210002102001007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9382622265 + ... + 9382644646.

It is an arithmetic number, because the mean of its divisors is an integer number (19065511182592).

Almost surely, 2^{210002102001001} is an apocalyptic number.

It is an amenable number.

210002102001001 is a deficient number, since it is larger than the sum of its proper divisors (18784032190103).

210002102001001 is a wasteful number, since it uses less digits than its factorization.

210002102001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18765266980 (or 18765266961 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210002102001001 its reverse (100100201200012), we get a palindrome (310102303201013).

The spelling of 210002102001001 in words is "two hundred ten trillion, two billion, one hundred two million, one thousand, one".