12323212112 has 20 divisors (see below), whose sum is σ = 23879582100. Its totient is φ = 6160739328.

The previous prime is 12323212103. The next prime is 12323212117. The reversal of 12323212112 is 21121232321.

It can be written as a sum of positive squares in 2 ways, for example, as 1760305936 + 10562906176 = 41956^2 + 102776^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12323212117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72038 + ... + 172730.

It is an arithmetic number, because the mean of its divisors is an integer number (1193979105).

Almost surely, 2^12323212112 is an apocalyptic number.

It is an amenable number.

12323212112 is a deficient number, since it is larger than the sum of its proper divisors (11556369988).

12323212112 is a wasteful number, since it uses less digits than its factorization.

12323212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108350 (or 108344 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 12323212112 its reverse (21121232321), we get a palindrome (33444444433).

The spelling of 12323212112 in words is "twelve billion, three hundred twenty-three million, two hundred twelve thousand, one hundred twelve".