12205822 has 4 divisors (see below), whose sum is σ = 18308736. Its totient is φ = 6102910.

The previous prime is 12205799. The next prime is 12205829. The reversal of 12205822 is 22850221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22850221 = 127 ⋅179923.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12205793 and 12205802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3051454 + ... + 3051457.

It is an arithmetic number, because the mean of its divisors is an integer number (4577184).

Almost surely, 2^12205822 is an apocalyptic number.

12205822 is a deficient number, since it is larger than the sum of its proper divisors (6102914).

12205822 is an equidigital number, since it uses as much as digits as its factorization.

12205822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6102913.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12205822 is about 3493.6831567845. The cubic root of 12205822 is about 230.2443653589.

The spelling of 12205822 in words is "twelve million, two hundred five thousand, eight hundred twenty-two".