22221324 has 48 divisors (see below), whose sum is σ = 58572640. Its totient is φ = 7283520.

The previous prime is 22221319. The next prime is 22221343. The reversal of 22221324 is 42312222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22221297 and 22221306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4902 + ... + 8274.

Almost surely, 2^22221324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22221324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29286320).

22221324 is an abundant number, since it is smaller than the sum of its proper divisors (36351316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22221324 is a wasteful number, since it uses less digits than its factorization.

22221324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3439 counting only the distinct ones).

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

The square root of 22221324 is about 4713.9499360939. The cubic root of 22221324 is about 281.1404337664.

Adding to 22221324 its reverse (42312222), we get a palindrome (64533546).

The spelling of 22221324 in words is "twenty-two million, two hundred twenty-one thousand, three hundred twenty-four".