24404100221 has 8 divisors (see below), whose sum is σ = 24742658304. Its totient is φ = 24067588320.

The previous prime is 24404100211. The next prime is 24404100233. The reversal of 24404100221 is 12200140442.

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-24404100221 is a prime.

It is a super-2 number, since 2×24404100221² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24404100193 and 24404100202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24404100211) 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, 487520 + ... + 535241.

It is an arithmetic number, because the mean of its divisors is an integer number (3092832288).

Almost surely, 2^24404100221 is an apocalyptic number.

It is an amenable number.

24404100221 is a deficient number, since it is larger than the sum of its proper divisors (338558083).

24404100221 is a wasteful number, since it uses less digits than its factorization.

24404100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023091.

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

Adding to 24404100221 its reverse (12200140442), we get a palindrome (36604240663).

The spelling of 24404100221 in words is "twenty-four billion, four hundred four million, one hundred thousand, two hundred twenty-one".