12222205 has 4 divisors (see below), whose sum is σ = 14666652. Its totient is φ = 9777760.

The previous prime is 12222151. The next prime is 12222211. The reversal of 12222205 is 50222221.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 10936249 = 1134^2 + 3307^2 .

It is not a de Polignac number, because 12222205 - 2¹⁷ = 12091133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222216 + ... + 1222225.

It is an arithmetic number, because the mean of its divisors is an integer number (3666663).

Almost surely, 2^12222205 is an apocalyptic number.

It is an amenable number.

12222205 is a deficient number, since it is larger than the sum of its proper divisors (2444447).

12222205 is an equidigital number, since it uses as much as digits as its factorization.

12222205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2444446.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 12222205 is about 3496.0270307879. The cubic root of 12222205 is about 230.3473328068.

Adding to 12222205 its sum of digits (16), we get a palindrome (12222221).

Adding to 12222205 its reverse (50222221), we get a palindrome (62444426).

The spelling of 12222205 in words is "twelve million, two hundred twenty-two thousand, two hundred five".