12205340422 has 24 divisors (see below), whose sum is σ = 21182830200. Its totient is φ = 5255886240.

The previous prime is 12205340401. The next prime is 12205340437. The reversal of 12205340422 is 22404350221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1322647 + ... + 1331842.

It is an arithmetic number, because the mean of its divisors is an integer number (882617925).

Almost surely, 2^12205340422 is an apocalyptic number.

12205340422 is a deficient number, since it is larger than the sum of its proper divisors (8977489778).

12205340422 is a wasteful number, since it uses less digits than its factorization.

12205340422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2654532 (or 2654521 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12205340422 its reverse (22404350221), we get a palindrome (34609690643).

The spelling of 12205340422 in words is "twelve billion, two hundred five million, three hundred forty thousand, four hundred twenty-two".