24030221 has 2 divisors, whose sum is σ = 24030222. Its totient is φ = 24030220.

The previous prime is 24030217. The next prime is 24030229. The reversal of 24030221 is 12203042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23174596 + 855625 = 4814^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 24030221 - 2² = 24030217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24030196 and 24030205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24030229) 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, 12015110 + 12015111.

It is an arithmetic number, because the mean of its divisors is an integer number (12015111).

Almost surely, 2^24030221 is an apocalyptic number.

It is an amenable number.

24030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24030221 is an equidigital number, since it uses as much as digits as its factorization.

24030221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 24030221 is about 4902.0629330926. The cubic root of 24030221 is about 288.5709361235.

Adding to 24030221 its reverse (12203042), we get a palindrome (36233263).

The spelling of 24030221 in words is "twenty-four million, thirty thousand, two hundred twenty-one".