4213444321 has 2 divisors, whose sum is σ = 4213444322. Its totient is φ = 4213444320.

The previous prime is 4213444303. The next prime is 4213444327. The reversal of 4213444321 is 1234443124.

4213444321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4213437921 + 6400 = 64911^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 4213444321 - 2⁵ = 4213444289 is a prime.

It is a super-3 number, since 3×4213444321³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 4213444321.

It is not a weakly prime, because it can be changed into another prime (4213444327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2106722160 + 2106722161.

It is an arithmetic number, because the mean of its divisors is an integer number (2106722161).

Almost surely, 2^4213444321 is an apocalyptic number.

It is an amenable number.

4213444321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4213444321 is an equidigital number, since it uses as much as digits as its factorization.

4213444321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 28.

The square root of 4213444321 is about 64911.0492982512. The cubic root of 4213444321 is about 1615.1483562398.

Adding to 4213444321 its reverse (1234443124), we get a palindrome (5447887445).

The spelling of 4213444321 in words is "four billion, two hundred thirteen million, four hundred forty-four thousand, three hundred twenty-one".