12422156 has 6 divisors (see below), whose sum is σ = 21738780. Its totient is φ = 6211076.

The previous prime is 12422153. The next prime is 12422209. The reversal of 12422156 is 65122421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12422153) 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 as a sum of consecutive naturals, namely, 1552766 + ... + 1552773.

It is an arithmetic number, because the mean of its divisors is an integer number (3623130).

Almost surely, 2^12422156 is an apocalyptic number.

It is an amenable number.

12422156 is a deficient number, since it is larger than the sum of its proper divisors (9316624).

12422156 is a wasteful number, since it uses less digits than its factorization.

12422156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105543 (or 3105541 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 12422156 is about 3524.5079089144. The cubic root of 12422156 is about 231.5966783618.

Adding to 12422156 its reverse (65122421), we get a palindrome (77544577).

The spelling of 12422156 in words is "twelve million, four hundred twenty-two thousand, one hundred fifty-six".