12201212212 has 12 divisors (see below), whose sum is σ = 24402424480. Its totient is φ = 5229090936.

The previous prime is 12201212209. The next prime is 12201212227. The reversal of 12201212212 is 21221210221.

It is a happy number.

12201212212 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217878762 + ... + 217878817.

Almost surely, 2^12201212212 is an apocalyptic number.

It is an amenable number.

12201212212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12201212212 is a wasteful number, since it uses less digits than its factorization.

12201212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435757590 (or 435757588 counting only the distinct ones).

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

Adding to 12201212212 its reverse (21221210221), we get a palindrome (33422422433).

The spelling of 12201212212 in words is "twelve billion, two hundred one million, two hundred twelve thousand, two hundred twelve".