12122212 has 6 divisors (see below), whose sum is σ = 21213878. Its totient is φ = 6061104.

The previous prime is 12122191. The next prime is 12122221. The reversal of 12122212 is 21222121.

It is a happy number.

12122212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10342656 + 1779556 = 3216^2 + 1334^2 .

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12122192 and 12122201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1515273 + ... + 1515280.

Almost surely, 2^12122212 is an apocalyptic number.

It is an amenable number.

12122212 is a deficient number, since it is larger than the sum of its proper divisors (9091666).

12122212 is a wasteful number, since it uses less digits than its factorization.

12122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030557 (or 3030555 counting only the distinct ones).

The product of its digits is 32, while the sum is 13.

The square root of 12122212 is about 3481.6967128112. The cubic root of 12122212 is about 229.7174349773.

Adding to 12122212 its reverse (21222121), we get a palindrome (33344333).

Subtracting 12122212 from its reverse (21222121), we obtain a palindrome (9099909).

The spelling of 12122212 in words is "twelve million, one hundred twenty-two thousand, two hundred twelve".