4244030221 has 2 divisors, whose sum is σ = 4244030222. Its totient is φ = 4244030220.

The previous prime is 4244030137. The next prime is 4244030227. The reversal of 4244030221 is 1220304424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4243089321 + 940900 = 65139^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 4244030221 - 2¹⁹ = 4243505933 is a prime.

It is a super-2 number, since 2×4244030221² = 36023585033522617682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4244030192 and 4244030201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4244030227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122015110 + 2122015111.

It is an arithmetic number, because the mean of its divisors is an integer number (2122015111).

Almost surely, 2^4244030221 is an apocalyptic number.

It is an amenable number.

4244030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

4244030221 is an equidigital number, since it uses as much as digits as its factorization.

4244030221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 4244030221 is about 65146.2218474717. The cubic root of 4244030221 is about 1619.0471230388.

Adding to 4244030221 its reverse (1220304424), we get a palindrome (5464334645).

The spelling of 4244030221 in words is "four billion, two hundred forty-four million, thirty thousand, two hundred twenty-one".