12323320212 has 24 divisors (see below), whose sum is σ = 32862187456. Its totient is φ = 3520948608.

The previous prime is 12323320211. The next prime is 12323320237. The reversal of 12323320212 is 21202332321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323320211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73353013 + ... + 73353180.

Almost surely, 2^12323320212 is an apocalyptic number.

12323320212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12323320212 is an abundant number, since it is smaller than the sum of its proper divisors (20538867244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12323320212 is a wasteful number, since it uses less digits than its factorization.

12323320212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146706207 (or 146706205 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 12323320212 its reverse (21202332321), we get a palindrome (33525652533).

The spelling of 12323320212 in words is "twelve billion, three hundred twenty-three million, three hundred twenty thousand, two hundred twelve".