10303321421 has 2 divisors, whose sum is σ = 10303321422. Its totient is φ = 10303321420.

The previous prime is 10303321403. The next prime is 10303321471. The reversal of 10303321421 is 12412330301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9566796100 + 736525321 = 97810^2 + 27139^2 .

It is a cyclic number.

It is not a de Polignac number, because 10303321421 - 2¹⁴ = 10303305037 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10303321393 and 10303321402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10303321471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151660710 + 5151660711.

It is an arithmetic number, because the mean of its divisors is an integer number (5151660711).

Almost surely, 2^10303321421 is an apocalyptic number.

It is an amenable number.

10303321421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10303321421 is an equidigital number, since it uses as much as digits as its factorization.

10303321421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 10303321421 its reverse (12412330301), we get a palindrome (22715651722).

The spelling of 10303321421 in words is "ten billion, three hundred three million, three hundred twenty-one thousand, four hundred twenty-one".