12212246 has 4 divisors (see below), whose sum is σ = 18318372. Its totient is φ = 6106122.

The previous prime is 12212237. The next prime is 12212279. The reversal of 12212246 is 64221221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3053060 + ... + 3053063.

It is an arithmetic number, because the mean of its divisors is an integer number (4579593).

Almost surely, 2^12212246 is an apocalyptic number.

12212246 is a deficient number, since it is larger than the sum of its proper divisors (6106126).

12212246 is an equidigital number, since it uses as much as digits as its factorization.

12212246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6106125.

The product of its digits is 384, while the sum is 20.

The square root of 12212246 is about 3494.6024094309. The cubic root of 12212246 is about 230.2847512882.

Adding to 12212246 its reverse (64221221), we get a palindrome (76433467).

The spelling of 12212246 in words is "twelve million, two hundred twelve thousand, two hundred forty-six".