22123332 has 144 divisors (see below), whose sum is σ = 72963072. Its totient is φ = 5480640.

The previous prime is 22123319. The next prime is 22123349. The reversal of 22123332 is 23332122.

It is a happy number.

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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63583 + ... + 63929.

It is an arithmetic number, because the mean of its divisors is an integer number (506688).

Almost surely, 2^22123332 is an apocalyptic number.

22123332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22123332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36481536).

22123332 is an abundant number, since it is smaller than the sum of its proper divisors (50839740).

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

22123332 is a wasteful number, since it uses less digits than its factorization.

22123332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398 (or 393 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 22123332 is about 4703.5446208152. The cubic root of 22123332 is about 280.7265654028.

Adding to 22123332 its reverse (23332122), we get a palindrome (45455454).

The spelling of 22123332 in words is "twenty-two million, one hundred twenty-three thousand, three hundred thirty-two".