24422221 has 4 divisors (see below), whose sum is σ = 24433344. Its totient is φ = 24411100.

The previous prime is 24422219. The next prime is 24422231. The reversal of 24422221 is 12222442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12222442 = 2 ⋅6111221.

It is a cyclic number.

It is not a de Polignac number, because 24422221 - 2¹ = 24422219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24422231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (6108336).

Almost surely, 2^24422221 is an apocalyptic number.

It is an amenable number.

24422221 is a deficient number, since it is larger than the sum of its proper divisors (11123).

24422221 is an equidigital number, since it uses as much as digits as its factorization.

24422221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122.

The product of its digits is 512, while the sum is 19.

The square root of 24422221 is about 4941.8843572063. The cubic root of 24422221 is about 290.1316128721.

Adding to 24422221 its reverse (12222442), we get a palindrome (36644663).

The spelling of 24422221 in words is "twenty-four million, four hundred twenty-two thousand, two hundred twenty-one".