324068221 has 2 divisors, whose sum is σ = 324068222. Its totient is φ = 324068220.

The previous prime is 324068219. The next prime is 324068231. The reversal of 324068221 is 122860423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283248900 + 40819321 = 16830^2 + 6389^2 .

It is a cyclic number.

It is not a de Polignac number, because 324068221 - 2¹ = 324068219 is a prime.

Together with 324068219, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 324068221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324068201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162034110 + 162034111.

It is an arithmetic number, because the mean of its divisors is an integer number (162034111).

Almost surely, 2^324068221 is an apocalyptic number.

It is an amenable number.

324068221 is a deficient number, since it is larger than the sum of its proper divisors (1).

324068221 is an equidigital number, since it uses as much as digits as its factorization.

324068221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 324068221 is about 18001.8949280347. The cubic root of 324068221 is about 686.8767480443.

The spelling of 324068221 in words is "three hundred twenty-four million, sixty-eight thousand, two hundred twenty-one".