4021442443441 has 2 divisors, whose sum is σ = 4021442443442. Its totient is φ = 4021442443440.

The previous prime is 4021442443393. The next prime is 4021442443451. The reversal of 4021442443441 is 1443442441204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2773074215025 + 1248368228416 = 1665255^2 + 1117304^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021442443441 - 2¹³ = 4021442435249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4021442443441.

It is not a weakly prime, because it can be changed into another prime (4021442443451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010721221720 + 2010721221721.

It is an arithmetic number, because the mean of its divisors is an integer number (2010721221721).

Almost surely, 2^{4021442443441} is an apocalyptic number.

It is an amenable number.

4021442443441 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021442443441 is an equidigital number, since it uses as much as digits as its factorization.

4021442443441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196608, while the sum is 37.

Adding to 4021442443441 its reverse (1443442441204), we get a palindrome (5464884884645).

The spelling of 4021442443441 in words is "four trillion, twenty-one billion, four hundred forty-two million, four hundred forty-three thousand, four hundred forty-one".