12422216 has 16 divisors (see below), whose sum is σ = 23360640. Its totient is φ = 6192720.

The previous prime is 12422209. The next prime is 12422243. The reversal of 12422216 is 61222421.

It is a happy number.

It is a super-2 number, since 2×12422216² = 308622900701312, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 821 + ... + 5051.

It is an arithmetic number, because the mean of its divisors is an integer number (1460040).

Almost surely, 2^12422216 is an apocalyptic number.

It is an amenable number.

12422216 is a deficient number, since it is larger than the sum of its proper divisors (10938424).

12422216 is a wasteful number, since it uses less digits than its factorization.

12422216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4604 (or 4600 counting only the distinct ones).

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

The square root of 12422216 is about 3524.5164207307. The cubic root of 12422216 is about 231.5970512380.

Adding to 12422216 its reverse (61222421), we get a palindrome (73644637).

The spelling of 12422216 in words is "twelve million, four hundred twenty-two thousand, two hundred sixteen".