12204220205 has 4 divisors (see below), whose sum is σ = 14645064252. Its totient is φ = 9763376160.

The previous prime is 12204220183. The next prime is 12204220261. The reversal of 12204220205 is 50202240221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50202240221 = 7 ⋅7171748603.

It can be written as a sum of positive squares in 2 ways, for example, as 2669478889 + 9534741316 = 51667^2 + 97646^2 .

It is not a de Polignac number, because 12204220205 - 2¹² = 12204216109 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, 1220422016 + ... + 1220422025.

It is an arithmetic number, because the mean of its divisors is an integer number (3661266063).

Almost surely, 2^12204220205 is an apocalyptic number.

It is an amenable number.

12204220205 is a deficient number, since it is larger than the sum of its proper divisors (2440844047).

12204220205 is an equidigital number, since it uses as much as digits as its factorization.

12204220205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2440844046.

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 12204220205 its reverse (50202240221), we get a palindrome (62406460426).

The spelling of 12204220205 in words is "twelve billion, two hundred four million, two hundred twenty thousand, two hundred five".