12201224212 has 12 divisors (see below), whose sum is σ = 21352918356. Its totient is φ = 6100390400.

The previous prime is 12201224179. The next prime is 12201224213. The reversal of 12201224212 is 21242210221.

It can be written as a sum of positive squares in 2 ways, for example, as 8971120656 + 3230103556 = 94716^2 + 56834^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12201224212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12201224213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172962 + ... + 233062.

It is an arithmetic number, because the mean of its divisors is an integer number (1779409863).

Almost surely, 2^12201224212 is an apocalyptic number.

It is an amenable number.

12201224212 is a deficient number, since it is larger than the sum of its proper divisors (9151694144).

12201224212 is a wasteful number, since it uses less digits than its factorization.

12201224212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110858 (or 110856 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 12201224212 its reverse (21242210221), we get a palindrome (33443434433).

The spelling of 12201224212 in words is "twelve billion, two hundred one million, two hundred twenty-four thousand, two hundred twelve".