1324000021 has 2 divisors, whose sum is σ = 1324000022. Its totient is φ = 1324000020.

The previous prime is 1323999949. The next prime is 1324000031. The reversal of 1324000021 is 1200004231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1280637796 + 43362225 = 35786^2 + 6585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324000021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1323999965 and 1324000010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1324000031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662000010 + 662000011.

It is an arithmetic number, because the mean of its divisors is an integer number (662000011).

Almost surely, 2^1324000021 is an apocalyptic number.

It is an amenable number.

1324000021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324000021 is an equidigital number, since it uses as much as digits as its factorization.

1324000021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1324000021 is about 36386.8110858866. The cubic root of 1324000021 is about 1098.0682406662.

Adding to 1324000021 its reverse (1200004231), we get a palindrome (2524004252).

The spelling of 1324000021 in words is "one billion, three hundred twenty-four million, twenty-one", and thus it is an aban number.