12243222 has 24 divisors (see below), whose sum is σ = 27681264. Its totient is φ = 3903504.

The previous prime is 12243221. The next prime is 12243227. The reversal of 12243222 is 22234221.

12243222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 12243195 and 12243204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12243221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14373 + ... + 15200.

It is an arithmetic number, because the mean of its divisors is an integer number (1153386).

Almost surely, 2^12243222 is an apocalyptic number.

12243222 is an abundant number, since it is smaller than the sum of its proper divisors (15438042).

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

12243222 is a wasteful number, since it uses less digits than its factorization.

12243222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29604 (or 29601 counting only the distinct ones).

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

The square root of 12243222 is about 3499.0315803090. The cubic root of 12243222 is about 230.4792903819.

Adding to 12243222 its reverse (22234221), we get a palindrome (34477443).

Subtracting 12243222 from its reverse (22234221), we obtain a palindrome (9990999).

It can be divided in two parts, 12243 and 222, that multiplied together give a triangular number (2717946 = T₂₃₃₁).

The spelling of 12243222 in words is "twelve million, two hundred forty-three thousand, two hundred twenty-two".