12331222 has 16 divisors (see below), whose sum is σ = 19792080. Its totient is φ = 5741568.

The previous prime is 12331219. The next prime is 12331223. The reversal of 12331222 is 22213321.

12331222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12331196 and 12331205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429 + ... + 5167.

It is an arithmetic number, because the mean of its divisors is an integer number (1237005).

Almost surely, 2^12331222 is an apocalyptic number.

12331222 is a deficient number, since it is larger than the sum of its proper divisors (7460858).

12331222 is a wasteful number, since it uses less digits than its factorization.

12331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855.

The product of its digits is 144, while the sum is 16.

The square root of 12331222 is about 3511.5839730811. The cubic root of 12331222 is about 231.0301741535.

Adding to 12331222 its reverse (22213321), we get a palindrome (34544543).

The spelling of 12331222 in words is "twelve million, three hundred thirty-one thousand, two hundred twenty-two".