12123230212 has 12 divisors (see below), whose sum is σ = 22332266320. Its totient is φ = 5742582696.

The previous prime is 12123230201. The next prime is 12123230221. The reversal of 12123230212 is 21203232121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 12123230212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79758018 + ... + 79758169.

Almost surely, 2^12123230212 is an apocalyptic number.

It is an amenable number.

12123230212 is a deficient number, since it is larger than the sum of its proper divisors (10209036108).

12123230212 is a wasteful number, since it uses less digits than its factorization.

12123230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159516210 (or 159516208 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12123230212 its reverse (21203232121), we get a palindrome (33326462333).

The spelling of 12123230212 in words is "twelve billion, one hundred twenty-three million, two hundred thirty thousand, two hundred twelve".