12112121112212 has 12 divisors (see below), whose sum is σ = 23123140305216. Its totient is φ = 5505509596440.

The previous prime is 12112121112167. The next prime is 12112121112233. The reversal of 12112121112212 is 21221112121121.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137637739868 + ... + 137637739955.

It is an arithmetic number, because the mean of its divisors is an integer number (1926928358768).

Almost surely, 2^{12112121112212} is an apocalyptic number.

It is an amenable number.

12112121112212 is a deficient number, since it is larger than the sum of its proper divisors (11011019193004).

12112121112212 is a wasteful number, since it uses less digits than its factorization.

12112121112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275275479838 (or 275275479836 counting only the distinct ones).

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

Adding to 12112121112212 its reverse (21221112121121), we get a palindrome (33333233233333).

The spelling of 12112121112212 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twelve".