12210222 has 16 divisors (see below), whose sum is σ = 25080912. Its totient is φ = 3960000.

The previous prime is 12210221. The next prime is 12210223. The reversal of 12210222 is 22201221.

It is an interprime number because it is at equal distance from previous prime (12210221) and next prime (12210223).

It is a junction number, because it is equal to n+sod(n) for n = 12210198 and 12210207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27279 + ... + 27722.

It is an arithmetic number, because the mean of its divisors is an integer number (1567557).

Almost surely, 2^12210222 is an apocalyptic number.

12210222 is an abundant number, since it is smaller than the sum of its proper divisors (12870690).

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

12210222 is a wasteful number, since it uses less digits than its factorization.

12210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55043.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 12210222 is about 3494.3128079781. The cubic root of 12210222 is about 230.2720284828.

Adding to 12210222 its reverse (22201221), we get a palindrome (34411443).

Subtracting 12210222 from its reverse (22201221), we obtain a palindrome (9990999).

The spelling of 12210222 in words is "twelve million, two hundred ten thousand, two hundred twenty-two".