22212324 has 72 divisors (see below), whose sum is σ = 58476600. Its totient is φ = 7104000.

The previous prime is 22212301. The next prime is 22212329. The reversal of 22212324 is 42321222.

It can be written as a sum of positive squares in 4 ways, for example, as 756900 + 21455424 = 870^2 + 4632^2 .

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 = 22212297 and 22212306.

It is not an unprimeable number, because it can be changed into a prime (22212329) 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, 149002 + ... + 149150.

It is an arithmetic number, because the mean of its divisors is an integer number (812175).

Almost surely, 2^22212324 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 22212324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29238300).

22212324 is an abundant number, since it is smaller than the sum of its proper divisors (36264276).

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

22212324 is a wasteful number, since it uses less digits than its factorization.

22212324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301 (or 296 counting only the distinct ones).

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

The square root of 22212324 is about 4712.9952259683. The cubic root of 22212324 is about 281.1024731483.

Adding to 22212324 its reverse (42321222), we get a palindrome (64533546).

The spelling of 22212324 in words is "twenty-two million, two hundred twelve thousand, three hundred twenty-four".