210001002102 has 12 divisors (see below), whose sum is σ = 455002171260. Its totient is φ = 70000334028.

The previous prime is 210001002067. The next prime is 210001002109. The reversal of 210001002102 is 201200100012.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001002109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5833361152 + ... + 5833361187.

It is an arithmetic number, because the mean of its divisors is an integer number (37916847605).

Almost surely, 2^210001002102 is an apocalyptic number.

210001002102 is an abundant number, since it is smaller than the sum of its proper divisors (245001169158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210001002102 is a wasteful number, since it uses less digits than its factorization.

210001002102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11666722347 (or 11666722344 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210001002102 its reverse (201200100012), we get a palindrome (411201102114).

The spelling of 210001002102 in words is "two hundred ten billion, one million, two thousand, one hundred two".