12223422 has 48 divisors (see below), whose sum is σ = 28229760. Its totient is φ = 3811536.

The previous prime is 12223417. The next prime is 12223429. The reversal of 12223422 is 22432221.

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

It is a junction number, because it is equal to n+sod(n) for n = 12223395 and 12223404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223429) 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, 35053 + ... + 35399.

It is an arithmetic number, because the mean of its divisors is an integer number (588120).

Almost surely, 2^12223422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12223422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14114880).

12223422 is an abundant number, since it is smaller than the sum of its proper divisors (16006338).

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

12223422 is a wasteful number, since it uses less digits than its factorization.

12223422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 474 counting only the distinct ones).

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

The square root of 12223422 is about 3496.2010811737. The cubic root of 12223422 is about 230.3549780012.

Adding to 12223422 its reverse (22432221), we get a palindrome (34655643).

The spelling of 12223422 in words is "twelve million, two hundred twenty-three thousand, four hundred twenty-two".