12205353205 has 4 divisors (see below), whose sum is σ = 14646423852. Its totient is φ = 9764282560.

The previous prime is 12205353203. The next prime is 12205353211. The reversal of 12205353205 is 50235350221.

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 7232141764 + 4973211441 = 85042^2 + 70521^2 .

It is not a de Polignac number, because 12205353205 - 2¹ = 12205353203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12205353203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220535316 + ... + 1220535325.

It is an arithmetic number, because the mean of its divisors is an integer number (3661605963).

Almost surely, 2^12205353205 is an apocalyptic number.

It is an amenable number.

12205353205 is a deficient number, since it is larger than the sum of its proper divisors (2441070647).

12205353205 is an equidigital number, since it uses as much as digits as its factorization.

12205353205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441070646.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 12205353205 in words is "twelve billion, two hundred five million, three hundred fifty-three thousand, two hundred five".