12012212 has 6 divisors (see below), whose sum is σ = 21021378. Its totient is φ = 6006104.

The previous prime is 12012197. The next prime is 12012257. The reversal of 12012212 is 21221021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11806096 + 206116 = 3436^2 + 454^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12012193 and 12012202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1501523 + ... + 1501530.

It is an arithmetic number, because the mean of its divisors is an integer number (3503563).

Almost surely, 2^12012212 is an apocalyptic number.

It is an amenable number.

12012212 is a deficient number, since it is larger than the sum of its proper divisors (9009166).

12012212 is a wasteful number, since it uses less digits than its factorization.

12012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003057 (or 3003055 counting only the distinct ones).

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

The square root of 12012212 is about 3465.8638172900. The cubic root of 12012212 is about 229.0204846825.

Adding to 12012212 its reverse (21221021), we get a palindrome (33233233).

The spelling of 12012212 in words is "twelve million, twelve thousand, two hundred twelve".