12112011212 has 24 divisors (see below), whose sum is σ = 24281859840. Its totient is φ = 5178468240.

The previous prime is 12112011181. The next prime is 12112011227. The reversal of 12112011212 is 21211021121.

It is a super-2 number, since 2×12112011212² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 504464 + ... + 527927.

It is an arithmetic number, because the mean of its divisors is an integer number (1011744160).

Almost surely, 2^12112011212 is an apocalyptic number.

It is an amenable number.

12112011212 is an abundant number, since it is smaller than the sum of its proper divisors (12169848628).

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

12112011212 is a wasteful number, since it uses less digits than its factorization.

12112011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032821 (or 1032819 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12112011212 its reverse (21211021121), we get a palindrome (33323032333).

Subtracting 12112011212 from its reverse (21211021121), we obtain a palindrome (9099009909).

The spelling of 12112011212 in words is "twelve billion, one hundred twelve million, eleven thousand, two hundred twelve".