10566332321 has 2 divisors, whose sum is σ = 10566332322. Its totient is φ = 10566332320.

The previous prime is 10566332297. The next prime is 10566332341. The reversal of 10566332321 is 12323366501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8361090721 + 2205241600 = 91439^2 + 46960^2 .

It is an emirp because it is prime and its reverse (12323366501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10566332321 is a prime.

It is a super-2 number, since 2×10566332321² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10566332341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283166160 + 5283166161.

It is an arithmetic number, because the mean of its divisors is an integer number (5283166161).

Almost surely, 2^10566332321 is an apocalyptic number.

It is an amenable number.

10566332321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10566332321 is an equidigital number, since it uses as much as digits as its factorization.

10566332321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

Adding to 10566332321 its reverse (12323366501), we get a palindrome (22889698822).

The spelling of 10566332321 in words is "ten billion, five hundred sixty-six million, three hundred thirty-two thousand, three hundred twenty-one".