324412021 has 2 divisors, whose sum is σ = 324412022. Its totient is φ = 324412020.

The previous prime is 324412019. The next prime is 324412051. The reversal of 324412021 is 120214423.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298909521 + 25502500 = 17289^2 + 5050^2 .

It is a cyclic number.

It is not a de Polignac number, because 324412021 - 2¹ = 324412019 is a prime.

Together with 324412019, 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 324412021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324412051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162206010 + 162206011.

It is an arithmetic number, because the mean of its divisors is an integer number (162206011).

Almost surely, 2^324412021 is an apocalyptic number.

It is an amenable number.

324412021 is a deficient number, since it is larger than the sum of its proper divisors (1).

324412021 is an equidigital number, since it uses as much as digits as its factorization.

324412021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 324412021 is about 18011.4413915156. The cubic root of 324412021 is about 687.1195619036.

Adding to 324412021 its reverse (120214423), we get a palindrome (444626444).

The spelling of 324412021 in words is "three hundred twenty-four million, four hundred twelve thousand, twenty-one".