2104204321 has 2 divisors, whose sum is σ = 2104204322. Its totient is φ = 2104204320.

The previous prime is 2104204259. The next prime is 2104204339. The reversal of 2104204321 is 1234024012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1545354721 + 558849600 = 39311^2 + 23640^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104204321 - 2¹⁷ = 2104073249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2104204021) 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, 1052102160 + 1052102161.

It is an arithmetic number, because the mean of its divisors is an integer number (1052102161).

Almost surely, 2^2104204321 is an apocalyptic number.

It is an amenable number.

2104204321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2104204321 is an equidigital number, since it uses as much as digits as its factorization.

2104204321 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2104204321 is about 45871.6069153894. The cubic root of 2104204321 is about 1281.4331930610.

Adding to 2104204321 its reverse (1234024012), we get a palindrome (3338228333).

The spelling of 2104204321 in words is "two billion, one hundred four million, two hundred four thousand, three hundred twenty-one".