12112012212 has 48 divisors (see below), whose sum is σ = 29057812224. Its totient is φ = 3924288000.

The previous prime is 12112012177. The next prime is 12112012223. The reversal of 12112012212 is 21221021121.

It is a junction number, because it is equal to n+sod(n) for n = 12112012191 and 12112012200.

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 15 ways as a sum of consecutive naturals, for example, 87912 + ... + 178752.

It is an arithmetic number, because the mean of its divisors is an integer number (605371088).

Almost surely, 2^12112012212 is an apocalyptic number.

12112012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12112012212 is an abundant number, since it is smaller than the sum of its proper divisors (16945800012).

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

12112012212 is a wasteful number, since it uses less digits than its factorization.

12112012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91160 (or 91158 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12112012212 its reverse (21221021121), we get a palindrome (33333033333).

The spelling of 12112012212 in words is "twelve billion, one hundred twelve million, twelve thousand, two hundred twelve".