10066200821 has 2 divisors, whose sum is σ = 10066200822. Its totient is φ = 10066200820.

The previous prime is 10066200811. The next prime is 10066200827. The reversal of 10066200821 is 12800266001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9287176900 + 779023921 = 96370^2 + 27911^2 .

It is an emirp because it is prime and its reverse (12800266001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10066200821 - 2⁶ = 10066200757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10066200827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5033100410 + 5033100411.

It is an arithmetic number, because the mean of its divisors is an integer number (5033100411).

Almost surely, 2^10066200821 is an apocalyptic number.

It is an amenable number.

10066200821 is a deficient number, since it is larger than the sum of its proper divisors (1).

10066200821 is an equidigital number, since it uses as much as digits as its factorization.

10066200821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

Adding to 10066200821 its reverse (12800266001), we get a palindrome (22866466822).

The spelling of 10066200821 in words is "ten billion, sixty-six million, two hundred thousand, eight hundred twenty-one".