10321040021 has 2 divisors, whose sum is σ = 10321040022. Its totient is φ = 10321040020.

The previous prime is 10321039973. The next prime is 10321040039. The reversal of 10321040021 is 12004012301.

10321040021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6472202500 + 3848837521 = 80450^2 + 62039^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321040021 - 2¹⁴ = 10321023637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10321039978 and 10321040005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10321040071) 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, 5160520010 + 5160520011.

It is an arithmetic number, because the mean of its divisors is an integer number (5160520011).

Almost surely, 2^10321040021 is an apocalyptic number.

It is an amenable number.

10321040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321040021 is an equidigital number, since it uses as much as digits as its factorization.

10321040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10321040021 its reverse (12004012301), we get a palindrome (22325052322).

The spelling of 10321040021 in words is "ten billion, three hundred twenty-one million, forty thousand, twenty-one".