24140244221 has 8 divisors (see below), whose sum is σ = 25132311864. Its totient is φ = 23166051840.

The previous prime is 24140244181. The next prime is 24140244223. The reversal of 24140244221 is 12244204142.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16354828996 + 7785415225 = 127886^2 + 88235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24140244221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24140244223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4466060 + ... + 4471461.

It is an arithmetic number, because the mean of its divisors is an integer number (3141538983).

Almost surely, 2^24140244221 is an apocalyptic number.

It is an amenable number.

24140244221 is a deficient number, since it is larger than the sum of its proper divisors (992067643).

24140244221 is an equidigital number, since it uses as much as digits as its factorization.

24140244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8937631.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 24140244221 its reverse (12244204142), we get a palindrome (36384448363).

The spelling of 24140244221 in words is "twenty-four billion, one hundred forty million, two hundred forty-four thousand, two hundred twenty-one".