12205354405 has 8 divisors (see below), whose sum is σ = 14672723832. Its totient is φ = 9746751168.

The previous prime is 12205354351. The next prime is 12205354417. The reversal of 12205354405 is 50445350221.

It can be written as a sum of positive squares in 4 ways, for example, as 172580769 + 12032773636 = 13137^2 + 109694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12205354405 - 2¹³ = 12205346213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2188482 + ... + 2194051.

It is an arithmetic number, because the mean of its divisors is an integer number (1834090479).

Almost surely, 2^12205354405 is an apocalyptic number.

It is an amenable number.

12205354405 is a deficient number, since it is larger than the sum of its proper divisors (2467369427).

12205354405 is an equidigital number, since it uses as much as digits as its factorization.

12205354405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383095.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 12205354405 in words is "twelve billion, two hundred five million, three hundred fifty-four thousand, four hundred five".