10003204021 has 2 divisors, whose sum is σ = 10003204022. Its totient is φ = 10003204020.

The previous prime is 10003204019. The next prime is 10003204033. The reversal of 10003204021 is 12040230001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8678971921 + 1324232100 = 93161^2 + 36390^2 .

It is a cyclic number.

It is not a de Polignac number, because 10003204021 - 2¹ = 10003204019 is a prime.

Together with 10003204019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 10003203992 and 10003204010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10003204121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001602010 + 5001602011.

It is an arithmetic number, because the mean of its divisors is an integer number (5001602011).

Almost surely, 2^10003204021 is an apocalyptic number.

It is an amenable number.

10003204021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10003204021 is an equidigital number, since it uses as much as digits as its factorization.

10003204021 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.

Adding to 10003204021 its reverse (12040230001), we get a palindrome (22043434022).

The spelling of 10003204021 in words is "ten billion, three million, two hundred four thousand, twenty-one".