320224324421 has 2 divisors, whose sum is σ = 320224324422. Its totient is φ = 320224324420.

The previous prime is 320224324397. The next prime is 320224324423. The reversal of 320224324421 is 124423422023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268490821921 + 51733502500 = 518161^2 + 227450^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320224324421 is a prime.

Together with 320224324423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320224324423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160112162210 + 160112162211.

It is an arithmetic number, because the mean of its divisors is an integer number (160112162211).

Almost surely, 2^320224324421 is an apocalyptic number.

It is an amenable number.

320224324421 is a deficient number, since it is larger than the sum of its proper divisors (1).

320224324421 is an equidigital number, since it uses as much as digits as its factorization.

320224324421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 320224324421 its reverse (124423422023), we get a palindrome (444647746444).

The spelling of 320224324421 in words is "three hundred twenty billion, two hundred twenty-four million, three hundred twenty-four thousand, four hundred twenty-one".