24320241221 has 2 divisors, whose sum is σ = 24320241222. Its totient is φ = 24320241220.

The previous prime is 24320241199. The next prime is 24320241223. The reversal of 24320241221 is 12214202342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18978093121 + 5342148100 = 137761^2 + 73090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24320241221 is a prime.

Together with 24320241223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (24320241223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12160120610 + 12160120611.

It is an arithmetic number, because the mean of its divisors is an integer number (12160120611).

Almost surely, 2^24320241221 is an apocalyptic number.

It is an amenable number.

24320241221 is a deficient number, since it is larger than the sum of its proper divisors (1).

24320241221 is an equidigital number, since it uses as much as digits as its factorization.

24320241221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 24320241221 its reverse (12214202342), we get a palindrome (36534443563).

The spelling of 24320241221 in words is "twenty-four billion, three hundred twenty million, two hundred forty-one thousand, two hundred twenty-one".