210002120210002 has 16 divisors (see below), whose sum is σ = 333533444434200. Its totient is φ = 98824330038528.

The previous prime is 210002120209949. The next prime is 210002120210009. The reversal of 210002120210002 is 200012021200012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 119123668955641 + 90878451254361 = 10914379^2 + 9533019^2 .

It is a super-2 number, since 2×210002120210002² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (210002120210009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11904124 + ... + 23700472.

Almost surely, 2^{210002120210002} is an apocalyptic number.

210002120210002 is a deficient number, since it is larger than the sum of its proper divisors (123531324224198).

210002120210002 is a wasteful number, since it uses less digits than its factorization.

210002120210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12319965.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210002120210002 its reverse (200012021200012), we get a palindrome (410014141410014).

The spelling of 210002120210002 in words is "two hundred ten trillion, two billion, one hundred twenty million, two hundred ten thousand, two".