12212201212 has 12 divisors (see below), whose sum is σ = 21390492760. Its totient is φ = 6100631856.

The previous prime is 12212201207. The next prime is 12212201219. The reversal of 12212201212 is 21210221221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12212201219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362162 + ... + 1371097.

Almost surely, 2^12212201212 is an apocalyptic number.

It is an amenable number.

12212201212 is a deficient number, since it is larger than the sum of its proper divisors (9178291548).

12212201212 is a wasteful number, since it uses less digits than its factorization.

12212201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734380 (or 2734378 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12212201212 its reverse (21210221221), we get a palindrome (33422422433).

The spelling of 12212201212 in words is "twelve billion, two hundred twelve million, two hundred one thousand, two hundred twelve".