10443020221 has 2 divisors, whose sum is σ = 10443020222. Its totient is φ = 10443020220.

The previous prime is 10443020207. The next prime is 10443020249. The reversal of 10443020221 is 12202034401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9109748025 + 1333272196 = 95445^2 + 36514^2 .

It is a cyclic number.

It is not a de Polignac number, because 10443020221 - 2²¹ = 10440923069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10443020281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5221510110 + 5221510111.

It is an arithmetic number, because the mean of its divisors is an integer number (5221510111).

Almost surely, 2^10443020221 is an apocalyptic number.

It is an amenable number.

10443020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10443020221 is an equidigital number, since it uses as much as digits as its factorization.

10443020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10443020221 its reverse (12202034401), we get a palindrome (22645054622).

The spelling of 10443020221 in words is "ten billion, four hundred forty-three million, twenty thousand, two hundred twenty-one".