4424223241421 has 2 divisors, whose sum is σ = 4424223241422. Its totient is φ = 4424223241420.

The previous prime is 4424223241381. The next prime is 4424223241423. The reversal of 4424223241421 is 1241423224244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4237776319396 + 186446922025 = 2058586^2 + 431795^2 .

It is a cyclic number.

It is not a de Polignac number, because 4424223241421 - 2⁶ = 4424223241357 is a prime.

Together with 4424223241423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4424223241423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2212111620710 + 2212111620711.

It is an arithmetic number, because the mean of its divisors is an integer number (2212111620711).

Almost surely, 2^{4424223241421} is an apocalyptic number.

It is an amenable number.

4424223241421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4424223241421 is an equidigital number, since it uses as much as digits as its factorization.

4424223241421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98304, while the sum is 35.

Adding to 4424223241421 its reverse (1241423224244), we get a palindrome (5665646465665).

The spelling of 4424223241421 in words is "four trillion, four hundred twenty-four billion, two hundred twenty-three million, two hundred forty-one thousand, four hundred twenty-one".