324121999 has 2 divisors, whose sum is σ = 324122000. Its totient is φ = 324121998.

The previous prime is 324121997. The next prime is 324122021. The reversal of 324121999 is 999121423.

It is a weak prime.

It is an emirp because it is prime and its reverse (999121423) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 324121999 - 2¹ = 324121997 is a prime.

Together with 324121997, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324121991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162060999 + 162061000.

It is an arithmetic number, because the mean of its divisors is an integer number (162061000).

Almost surely, 2^324121999 is an apocalyptic number.

324121999 is a deficient number, since it is larger than the sum of its proper divisors (1).

324121999 is an equidigital number, since it uses as much as digits as its factorization.

324121999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 40.

The square root of 324121999 is about 18003.3885421606. The cubic root of 324121999 is about 686.9147408827.

The spelling of 324121999 in words is "three hundred twenty-four million, one hundred twenty-one thousand, nine hundred ninety-nine".