213221203301 has 2 divisors, whose sum is σ = 213221203302. Its totient is φ = 213221203300.

The previous prime is 213221203289. The next prime is 213221203303. The reversal of 213221203301 is 103302122312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112443526276 + 100777677025 = 335326^2 + 317455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213221203301 is a prime.

It is a Sophie Germain prime.

Together with 213221203303, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213221203303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106610601650 + 106610601651.

It is an arithmetic number, because the mean of its divisors is an integer number (106610601651).

Almost surely, 2^213221203301 is an apocalyptic number.

It is an amenable number.

213221203301 is a deficient number, since it is larger than the sum of its proper divisors (1).

213221203301 is an equidigital number, since it uses as much as digits as its factorization.

213221203301 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 213221203301 its reverse (103302122312), we get a palindrome (316523325613).

The spelling of 213221203301 in words is "two hundred thirteen billion, two hundred twenty-one million, two hundred three thousand, three hundred one".