4440442434221 has 2 divisors, whose sum is σ = 4440442434222. Its totient is φ = 4440442434220.

The previous prime is 4440442434187. The next prime is 4440442434229. The reversal of 4440442434221 is 1224342440444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3640410576196 + 800031858025 = 1907986^2 + 894445^2 .

It is a cyclic number.

It is not a de Polignac number, because 4440442434221 - 2⁶ = 4440442434157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4440442434229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2220221217110 + 2220221217111.

It is an arithmetic number, because the mean of its divisors is an integer number (2220221217111).

Almost surely, 2^{4440442434221} is an apocalyptic number.

It is an amenable number.

4440442434221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4440442434221 is an equidigital number, since it uses as much as digits as its factorization.

4440442434221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 393216, while the sum is 38.

Adding to 4440442434221 its reverse (1224342440444), we get a palindrome (5664784874665).

The spelling of 4440442434221 in words is "four trillion, four hundred forty billion, four hundred forty-two million, four hundred thirty-four thousand, two hundred twenty-one".