24004140221 has 2 divisors, whose sum is σ = 24004140222. Its totient is φ = 24004140220.

The previous prime is 24004140161. The next prime is 24004140227. The reversal of 24004140221 is 12204140042.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23398291225 + 605848996 = 152965^2 + 24614^2 .

It is a cyclic number.

It is not a de Polignac number, because 24004140221 - 2¹⁴ = 24004123837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24004140193 and 24004140202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24004140227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12002070110 + 12002070111.

It is an arithmetic number, because the mean of its divisors is an integer number (12002070111).

Almost surely, 2^24004140221 is an apocalyptic number.

It is an amenable number.

24004140221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24004140221 is an equidigital number, since it uses as much as digits as its factorization.

24004140221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 24004140221 its reverse (12204140042), we get a palindrome (36208280263).

The spelling of 24004140221 in words is "twenty-four billion, four million, one hundred forty thousand, two hundred twenty-one".