12210212 has 18 divisors (see below), whose sum is σ = 24856902. Its totient is φ = 5232864.

The previous prime is 12210203. The next prime is 12210221. The reversal of 12210212 is 21201221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12210203) and next prime (12210221).

It can be written as a sum of positive squares in only one way, i.e., 9572836 + 2637376 = 3094^2 + 1624^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12210193 and 12210202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30953 + ... + 31344.

It is an arithmetic number, because the mean of its divisors is an integer number (1380939).

Almost surely, 2^12210212 is an apocalyptic number.

It is an amenable number.

12210212 is an abundant number, since it is smaller than the sum of its proper divisors (12646690).

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

12210212 is a wasteful number, since it uses less digits than its factorization.

12210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62315 (or 62306 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12210212 is about 3494.3113770813. The cubic root of 12210212 is about 230.2719656196.

Adding to 12210212 its reverse (21201221), we get a palindrome (33411433).

The spelling of 12210212 in words is "twelve million, two hundred ten thousand, two hundred twelve".