210221242213 has 2 divisors, whose sum is σ = 210221242214. Its totient is φ = 210221242212.

The previous prime is 210221242201. The next prime is 210221242219. The reversal of 210221242213 is 312242122012.

210221242213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210026974369 + 194267844 = 458287^2 + 13938^2 .

It is a cyclic number.

It is not a de Polignac number, because 210221242213 - 2³³ = 201631307621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210221242219) 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, 105110621106 + 105110621107.

It is an arithmetic number, because the mean of its divisors is an integer number (105110621107).

Almost surely, 2^210221242213 is an apocalyptic number.

It is an amenable number.

210221242213 is a deficient number, since it is larger than the sum of its proper divisors (1).

210221242213 is an equidigital number, since it uses as much as digits as its factorization.

210221242213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 210221242213 its reverse (312242122012), we get a palindrome (522463364225).

The spelling of 210221242213 in words is "two hundred ten billion, two hundred twenty-one million, two hundred forty-two thousand, two hundred thirteen".