24041221 has 2 divisors, whose sum is σ = 24041222. Its totient is φ = 24041220.

The previous prime is 24041219. The next prime is 24041263. The reversal of 24041221 is 12214042.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12744900 + 11296321 = 3570^2 + 3361^2 .

It is a cyclic number.

It is not a de Polignac number, because 24041221 - 2¹ = 24041219 is a prime.

Together with 24041219, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 24041195 and 24041204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24041921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12020610 + 12020611.

It is an arithmetic number, because the mean of its divisors is an integer number (12020611).

Almost surely, 2^24041221 is an apocalyptic number.

It is an amenable number.

24041221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24041221 is an equidigital number, since it uses as much as digits as its factorization.

24041221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 24041221 is about 4903.1847813437. The cubic root of 24041221 is about 288.6149611878.

Adding to 24041221 its reverse (12214042), we get a palindrome (36255263).

The spelling of 24041221 in words is "twenty-four million, forty-one thousand, two hundred twenty-one".