210313210232221 has 2 divisors, whose sum is σ = 210313210232222. Its totient is φ = 210313210232220.

The previous prime is 210313210232197. The next prime is 210313210232261. The reversal of 210313210232221 is 122232012313012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144164446922500 + 66148763309721 = 12006850^2 + 8133189^2 .

It is a cyclic number.

It is not a de Polignac number, because 210313210232221 - 2¹⁷ = 210313210101149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210313210232261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105156605116110 + 105156605116111.

It is an arithmetic number, because the mean of its divisors is an integer number (105156605116111).

Almost surely, 2^{210313210232221} is an apocalyptic number.

It is an amenable number.

210313210232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

210313210232221 is an equidigital number, since it uses as much as digits as its factorization.

210313210232221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 210313210232221 its reverse (122232012313012), we get a palindrome (332545222545233).

The spelling of 210313210232221 in words is "two hundred ten trillion, three hundred thirteen billion, two hundred ten million, two hundred thirty-two thousand, two hundred twenty-one".