12112121121212 has 24 divisors (see below), whose sum is σ = 24256074403680. Its totient is φ = 5184087874560.

The previous prime is 12112121121167. The next prime is 12112121121241. The reversal of 12112121121212 is 21212112121121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284194037 + ... + 284236652.

It is an arithmetic number, because the mean of its divisors is an integer number (1010669766820).

Almost surely, 2^{12112121121212} is an apocalyptic number.

It is an amenable number.

12112121121212 is an abundant number, since it is smaller than the sum of its proper divisors (12143953282468).

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

12112121121212 is a wasteful number, since it uses less digits than its factorization.

12112121121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568431461 (or 568431459 counting only the distinct ones).

The product of its digits is 64, while the sum is 20.

Adding to 12112121121212 its reverse (21212112121121), we get a palindrome (33324233242333).

Subtracting 12112121121212 from its reverse (21212112121121), we obtain a palindrome (9099990999909).

It can be divided in two parts, 12112121121 and 212, that multiplied together give a palindrome (2567769677652).

The spelling of 12112121121212 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".