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12422 = 26211

12422 has 4 divisors (see below), whose sum is σ = 18636. Its totient is φ = 6210.

The previous prime is 12421. The next prime is 12433. The reversal of 12422 is 22421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22421 = 73203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3104 + ... + 3107.

It is an arithmetic number, because the mean of its divisors is an integer number (4659).

212422 is an apocalyptic number.

12422 is a deficient number, since it is larger than the sum of its proper divisors (6214).

12422 is an equidigital number, since it uses as much as digits as its factorization.

12422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213.

The product of its digits is 32, while the sum is 11.

The square root of 12422 is about 111.4540263965. The cubic root of 12422 is about 23.1595708878.

Adding to 12422 its reverse (22421), we get a palindrome (34843).

Subtracting 12422 from its reverse (22421), we obtain a palindrome (9999).

It can be divided in two parts, 12 and 422, that added together give a palindrome (434).

The spelling of 12422 in words is "twelve thousand, four hundred twenty-two", and thus it is an iban number.

Divisors: 1 2 6211 12422