4421221243 has 2 divisors, whose sum is σ = 4421221244. Its totient is φ = 4421221242.

The previous prime is 4421221141. The next prime is 4421221249. The reversal of 4421221243 is 3421221244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4421221243 - 2¹⁷ = 4421090171 is a prime.

It is not a weakly prime, because it can be changed into another prime (4421221249) 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, 2210610621 + 2210610622.

It is an arithmetic number, because the mean of its divisors is an integer number (2210610622).

Almost surely, 2^4421221243 is an apocalyptic number.

4421221243 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421221243 is an equidigital number, since it uses as much as digits as its factorization.

4421221243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

The square root of 4421221243 is about 66492.2645350570. The cubic root of 4421221243 is about 1641.2727136034.

Adding to 4421221243 its reverse (3421221244), we get a palindrome (7842442487).

Subtracting from 4421221243 its reverse (3421221244), we obtain a palindrome (999999999).

The spelling of 4421221243 in words is "four billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred forty-three".