210213333221 has 2 divisors, whose sum is σ = 210213333222. Its totient is φ = 210213333220.

The previous prime is 210213333203. The next prime is 210213333257. The reversal of 210213333221 is 122333312012.

210213333221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207923232196 + 2290101025 = 455986^2 + 47855^2 .

It is a cyclic number.

It is not a de Polignac number, because 210213333221 - 2²⁶ = 210146224357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210213633221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106666610 + 105106666611.

It is an arithmetic number, because the mean of its divisors is an integer number (105106666611).

Almost surely, 2^210213333221 is an apocalyptic number.

It is an amenable number.

210213333221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210213333221 is an equidigital number, since it uses as much as digits as its factorization.

210213333221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 210213333221 its reverse (122333312012), we get a palindrome (332546645233).

The spelling of 210213333221 in words is "two hundred ten billion, two hundred thirteen million, three hundred thirty-three thousand, two hundred twenty-one".