12115212 has 12 divisors (see below), whose sum is σ = 28268856. Its totient is φ = 4038400.

The previous prime is 12115211. The next prime is 12115223. The reversal of 12115212 is 21251121.

12115212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12115191 and 12115200.

It is not an unprimeable number, because it can be changed into a prime (12115211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 504789 + ... + 504812.

It is an arithmetic number, because the mean of its divisors is an integer number (2355738).

Almost surely, 2^12115212 is an apocalyptic number.

12115212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12115212 is an abundant number, since it is smaller than the sum of its proper divisors (16153644).

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

12115212 is a wasteful number, since it uses less digits than its factorization.

12115212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009608 (or 1009606 counting only the distinct ones).

The product of its digits is 40, while the sum is 15.

The square root of 12115212 is about 3480.6913106451. The cubic root of 12115212 is about 229.6732095047.

Adding to 12115212 its reverse (21251121), we get a palindrome (33366333).

The spelling of 12115212 in words is "twelve million, one hundred fifteen thousand, two hundred twelve".