12216032212 has 12 divisors (see below), whose sum is σ = 21399001876. Its totient is φ = 6102031680.

The previous prime is 12216032209. The next prime is 12216032263. The reversal of 12216032212 is 21223061221.

It is a happy number.

12216032212 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 2 ways, for example, as 3499195716 + 8716836496 = 59154^2 + 93364^2 .

It is a super-2 number, since 2×12216032212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491513 + ... + 1499680.

Almost surely, 2^12216032212 is an apocalyptic number.

It is an amenable number.

12216032212 is a deficient number, since it is larger than the sum of its proper divisors (9182969664).

12216032212 is a wasteful number, since it uses less digits than its factorization.

12216032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992218 (or 2992216 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12216032212 its reverse (21223061221), we get a palindrome (33439093433).

The spelling of 12216032212 in words is "twelve billion, two hundred sixteen million, thirty-two thousand, two hundred twelve".