244343221 has 2 divisors, whose sum is σ = 244343222. Its totient is φ = 244343220.

The previous prime is 244343219. The next prime is 244343251. The reversal of 244343221 is 122343442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223054225 + 21288996 = 14935^2 + 4614^2 .

It is a cyclic number.

It is not a de Polignac number, because 244343221 - 2¹ = 244343219 is a prime.

Together with 244343219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244343251) 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, 122171610 + 122171611.

It is an arithmetic number, because the mean of its divisors is an integer number (122171611).

Almost surely, 2^244343221 is an apocalyptic number.

It is an amenable number.

244343221 is a deficient number, since it is larger than the sum of its proper divisors (1).

244343221 is an equidigital number, since it uses as much as digits as its factorization.

244343221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 244343221 is about 15631.4817275906. The cubic root of 244343221 is about 625.1728341210.

Adding to 244343221 its reverse (122343442), we get a palindrome (366686663).

The spelling of 244343221 in words is "two hundred forty-four million, three hundred forty-three thousand, two hundred twenty-one".