12323121212 has 24 divisors (see below), whose sum is σ = 22173047232. Its totient is φ = 5989075200.

The previous prime is 12323121163. The next prime is 12323121221. The reversal of 12323121212 is 21212132321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94193 + ... + 183080.

It is an arithmetic number, because the mean of its divisors is an integer number (923876968).

Almost surely, 2^12323121212 is an apocalyptic number.

It is an amenable number.

12323121212 is a deficient number, since it is larger than the sum of its proper divisors (9849926020).

12323121212 is a wasteful number, since it uses less digits than its factorization.

12323121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277589 (or 277587 counting only the distinct ones).

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

Adding to 12323121212 its reverse (21212132321), we get a palindrome (33535253533).

The spelling of 12323121212 in words is "twelve billion, three hundred twenty-three million, one hundred twenty-one thousand, two hundred twelve".