210002200220221 has 4 divisors (see below), whose sum is σ = 210146730297532. Its totient is φ = 209857670142912.

The previous prime is 210002200220147. The next prime is 210002200220311. The reversal of 210002200220221 is 122022002200012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117762887163321 + 92239313056900 = 10851861^2 + 9604130^2 .

It is a cyclic number.

It is not a de Polignac number, because 210002200220221 - 2⁹ = 210002200219709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210002200220195 and 210002200220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210002200224221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72265036476 + ... + 72265039381.

It is an arithmetic number, because the mean of its divisors is an integer number (52536682574383).

Almost surely, 2^{210002200220221} is an apocalyptic number.

It is an amenable number.

210002200220221 is a deficient number, since it is larger than the sum of its proper divisors (144530077311).

210002200220221 is a wasteful number, since it uses less digits than its factorization.

210002200220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144530077310.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 210002200220221 its reverse (122022002200012), we get a palindrome (332024202420233).

The spelling of 210002200220221 in words is "two hundred ten trillion, two billion, two hundred million, two hundred twenty thousand, two hundred twenty-one".