24223221 has 24 divisors (see below), whose sum is σ = 38342304. Its totient is φ = 14614560.

The previous prime is 24223211. The next prime is 24223229. The reversal of 24223221 is 12232242.

It is not a de Polignac number, because 24223221 - 2⁷ = 24223093 is a prime.

It is a super-2 number, since 2×24223221² = 1173528871229682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 24223194 and 24223203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24223229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29995 + ... + 30791.

It is an arithmetic number, because the mean of its divisors is an integer number (1597596).

Almost surely, 2^24223221 is an apocalyptic number.

It is an amenable number.

24223221 is a deficient number, since it is larger than the sum of its proper divisors (14119083).

24223221 is a wasteful number, since it uses less digits than its factorization.

24223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121 (or 1118 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 24223221 is about 4921.7091543487. The cubic root of 24223221 is about 289.3414346388.

Adding to 24223221 its reverse (12232242), we get a palindrome (36455463).

The spelling of 24223221 in words is "twenty-four million, two hundred twenty-three thousand, two hundred twenty-one".