12122005204 has 12 divisors (see below), whose sum is σ = 21219405844. Its totient is φ = 6059317824.

The previous prime is 12122005199. The next prime is 12122005211. The reversal of 12122005204 is 40250022121.

12122005204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10562500 + 12111442704 = 3250^2 + 110052^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404937 + ... + 433840.

Almost surely, 2^12122005204 is an apocalyptic number.

It is an amenable number.

12122005204 is a deficient number, since it is larger than the sum of its proper divisors (9097400640).

12122005204 is a wasteful number, since it uses less digits than its factorization.

12122005204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842394 (or 842392 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

Adding to 12122005204 its reverse (40250022121), we get a palindrome (52372027325).

The spelling of 12122005204 in words is "twelve billion, one hundred twenty-two million, five thousand, two hundred four".