24023221 has 2 divisors, whose sum is σ = 24023222. Its totient is φ = 24023220.

The previous prime is 24023213. The next prime is 24023291. The reversal of 24023221 is 12232042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14326225 + 9696996 = 3785^2 + 3114^2 .

It is a cyclic number.

It is not a de Polignac number, because 24023221 - 2³ = 24023213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24023195 and 24023204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24023291) 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, 12011610 + 12011611.

It is an arithmetic number, because the mean of its divisors is an integer number (12011611).

Almost surely, 2^24023221 is an apocalyptic number.

It is an amenable number.

24023221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24023221 is an equidigital number, since it uses as much as digits as its factorization.

24023221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 24023221 is about 4901.3488959673. The cubic root of 24023221 is about 288.5429131780.

Adding to 24023221 its reverse (12232042), we get a palindrome (36255263).

The spelling of 24023221 in words is "twenty-four million, twenty-three thousand, two hundred twenty-one".