210002102101221 has 16 divisors (see below), whose sum is σ = 282233281938048. Its totient is φ = 138887514464000.

The previous prime is 210002102101213. The next prime is 210002102101229. The reversal of 210002102101221 is 122101201200012.

It is an interprime number because it is at equal distance from previous prime (210002102101213) and next prime (210002102101229).

It is a cyclic number.

It is not a de Polignac number, because 210002102101221 - 2³ = 210002102101213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210002102101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002102101229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168457080 + ... + 169699121.

It is an arithmetic number, because the mean of its divisors is an integer number (17639580121128).

Almost surely, 2^{210002102101221} is an apocalyptic number.

It is an amenable number.

210002102101221 is a deficient number, since it is larger than the sum of its proper divisors (72231179836827).

210002102101221 is a wasteful number, since it uses less digits than its factorization.

210002102101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338157852.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210002102101221 its reverse (122101201200012), we get a palindrome (332103303301233).

The spelling of 210002102101221 in words is "two hundred ten trillion, two billion, one hundred two million, one hundred one thousand, two hundred twenty-one".