10043442221 has 2 divisors, whose sum is σ = 10043442222. Its totient is φ = 10043442220.

The previous prime is 10043442209. The next prime is 10043442229. The reversal of 10043442221 is 12224434001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9773497321 + 269944900 = 98861^2 + 16430^2 .

It is a cyclic number.

It is not a de Polignac number, because 10043442221 - 2²⁶ = 9976333357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10043442229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5021721110 + 5021721111.

It is an arithmetic number, because the mean of its divisors is an integer number (5021721111).

Almost surely, 2^10043442221 is an apocalyptic number.

It is an amenable number.

10043442221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10043442221 is an equidigital number, since it uses as much as digits as its factorization.

10043442221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 10043442221 its reverse (12224434001), we get a palindrome (22267876222).

The spelling of 10043442221 in words is "ten billion, forty-three million, four hundred forty-two thousand, two hundred twenty-one".