10321300021 has 2 divisors, whose sum is σ = 10321300022. Its totient is φ = 10321300020.

The previous prime is 10321300001. The next prime is 10321300027. The reversal of 10321300021 is 12000312301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7329756996 + 2991543025 = 85614^2 + 54695^2 .

It is a cyclic number.

It is not a de Polignac number, because 10321300021 - 2⁷ = 10321299893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10321299974 and 10321300010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10321300027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160650010 + 5160650011.

It is an arithmetic number, because the mean of its divisors is an integer number (5160650011).

Almost surely, 2^10321300021 is an apocalyptic number.

It is an amenable number.

10321300021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10321300021 is an equidigital number, since it uses as much as digits as its factorization.

10321300021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10321300021 its reverse (12000312301), we get a palindrome (22321612322).

The spelling of 10321300021 in words is "ten billion, three hundred twenty-one million, three hundred thousand, twenty-one".