12122012 has 36 divisors (see below), whose sum is σ = 25759440. Its totient is φ = 4967424.

The previous prime is 12122009. The next prime is 12122021. The reversal of 12122012 is 21022121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12121984 and 12122002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3164 + ... + 5852.

It is an arithmetic number, because the mean of its divisors is an integer number (715540).

Almost surely, 2^12122012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12879720).

12122012 is an abundant number, since it is smaller than the sum of its proper divisors (13637428).

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

12122012 is a wasteful number, since it uses less digits than its factorization.

12122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2730 (or 2721 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12122012 is about 3481.6679910641. The cubic root of 12122012 is about 229.7161716287.

Adding to 12122012 its reverse (21022121), we get a palindrome (33144133).

The spelling of 12122012 in words is "twelve million, one hundred twenty-two thousand, twelve".