12211202212 has 12 divisors (see below), whose sum is σ = 23312295216. Its totient is φ = 5550546440.

The previous prime is 12211202197. The next prime is 12211202261. The reversal of 12211202212 is 21220211221.

It is a happy number.

It is a super-2 number, since 2×12211202212² (a number of 21 digits) contains 22 as substring.

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, 138763618 + ... + 138763705.

It is an arithmetic number, because the mean of its divisors is an integer number (1942691268).

Almost surely, 2^12211202212 is an apocalyptic number.

It is an amenable number.

12211202212 is a deficient number, since it is larger than the sum of its proper divisors (11101093004).

12211202212 is a wasteful number, since it uses less digits than its factorization.

12211202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277527338 (or 277527336 counting only the distinct ones).

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

Adding to 12211202212 its reverse (21220211221), we get a palindrome (33431413433).

Subtracting 12211202212 from its reverse (21220211221), we obtain a palindrome (9009009009).

The spelling of 12211202212 in words is "twelve billion, two hundred eleven million, two hundred two thousand, two hundred twelve".