213010332221 has 2 divisors, whose sum is σ = 213010332222. Its totient is φ = 213010332220.

The previous prime is 213010332203. The next prime is 213010332287. The reversal of 213010332221 is 122233010312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182317044196 + 30693288025 = 426986^2 + 175195^2 .

It is a cyclic number.

It is not a de Polignac number, because 213010332221 - 2²² = 213006137917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213010332193 and 213010332202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213010332721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505166110 + 106505166111.

It is an arithmetic number, because the mean of its divisors is an integer number (106505166111).

Almost surely, 2^213010332221 is an apocalyptic number.

It is an amenable number.

213010332221 is a deficient number, since it is larger than the sum of its proper divisors (1).

213010332221 is an equidigital number, since it uses as much as digits as its factorization.

213010332221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213010332221 its reverse (122233010312), we get a palindrome (335243342533).

The spelling of 213010332221 in words is "two hundred thirteen billion, ten million, three hundred thirty-two thousand, two hundred twenty-one".