4421213 has 2 divisors, whose sum is σ = 4421214. Its totient is φ = 4421212.

The previous prime is 4421203. The next prime is 4421227. The reversal of 4421213 is 3121244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4418404 + 2809 = 2102^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 4421213 - 2¹⁰ = 4420189 is a prime.

It is a Chen prime.

It is an Ulam number.

It is equal to p₃₁₀₇₃₃ and since 4421213 and 310733 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 4421191 and 4421200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4421203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2210606 + 2210607.

It is an arithmetic number, because the mean of its divisors is an integer number (2210607).

Almost surely, 2^4421213 is an apocalyptic number.

It is an amenable number.

4421213 is a deficient number, since it is larger than the sum of its proper divisors (1).

4421213 is an equidigital number, since it uses as much as digits as its factorization.

4421213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 4421213 is about 2102.6680670044. The cubic root of 4421213 is about 164.1271693597.

Adding to 4421213 its reverse (3121244), we get a palindrome (7542457).

The spelling of 4421213 in words is "four million, four hundred twenty-one thousand, two hundred thirteen".