20104442321 has 2 divisors, whose sum is σ = 20104442322. Its totient is φ = 20104442320.

The previous prime is 20104442273. The next prime is 20104442329. The reversal of 20104442321 is 12324440102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20004142096 + 100300225 = 141436^2 + 10015^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104442321 - 2³⁴ = 2924573137 is a prime.

It is not a weakly prime, because it can be changed into another prime (20104442329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052221160 + 10052221161.

It is an arithmetic number, because the mean of its divisors is an integer number (10052221161).

Almost surely, 2^20104442321 is an apocalyptic number.

It is an amenable number.

20104442321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104442321 is an equidigital number, since it uses as much as digits as its factorization.

20104442321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20104442321 its reverse (12324440102), we get a palindrome (32428882423).

The spelling of 20104442321 in words is "twenty billion, one hundred four million, four hundred forty-two thousand, three hundred twenty-one".