244232221 has 2 divisors, whose sum is σ = 244232222. Its totient is φ = 244232220.

The previous prime is 244232189. The next prime is 244232237. The reversal of 244232221 is 122232442.

244232221 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., 243204025 + 1028196 = 15595^2 + 1014^2 .

It is a cyclic number.

It is not a de Polignac number, because 244232221 - 2⁵ = 244232189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 244232192 and 244232201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244272221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122116110 + 122116111.

It is an arithmetic number, because the mean of its divisors is an integer number (122116111).

Almost surely, 2^244232221 is an apocalyptic number.

It is an amenable number.

244232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

244232221 is an equidigital number, since it uses as much as digits as its factorization.

244232221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 22.

The square root of 244232221 is about 15627.9307971337. The cubic root of 244232221 is about 625.0781521472.

Adding to 244232221 its reverse (122232442), we get a palindrome (366464663).

The spelling of 244232221 in words is "two hundred forty-four million, two hundred thirty-two thousand, two hundred twenty-one".