10443442421 has 2 divisors, whose sum is σ = 10443442422. Its totient is φ = 10443442420.

The previous prime is 10443442393. The next prime is 10443442439. The reversal of 10443442421 is 12424434401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8173968100 + 2269474321 = 90410^2 + 47639^2 .

It is an emirp because it is prime and its reverse (12424434401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10443442421 - 2¹⁸ = 10443180277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10443442021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5221721210 + 5221721211.

It is an arithmetic number, because the mean of its divisors is an integer number (5221721211).

Almost surely, 2^10443442421 is an apocalyptic number.

It is an amenable number.

10443442421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10443442421 is an equidigital number, since it uses as much as digits as its factorization.

10443442421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 10443442421 its reverse (12424434401), we get a palindrome (22867876822).

The spelling of 10443442421 in words is "ten billion, four hundred forty-three million, four hundred forty-two thousand, four hundred twenty-one".