12201210221212 has 24 divisors (see below), whose sum is σ = 21999442400432. Its totient is φ = 5918395248000.

The previous prime is 12201210221203. The next prime is 12201210221227. The reversal of 12201210221212 is 21212201210221.

It is a self number, because there is not a number n which added to its sum of digits gives 12201210221212.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 342481914 + ... + 342517537.

Almost surely, 2^{12201210221212} is an apocalyptic number.

It is an amenable number.

12201210221212 is a deficient number, since it is larger than the sum of its proper divisors (9798232179220).

12201210221212 is a wasteful number, since it uses less digits than its factorization.

12201210221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684999589 (or 684999587 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12201210221212 its reverse (21212201210221), we get a palindrome (33413411431433).

It can be divided in two parts, 12201210221 and 212, that multiplied together give a palindrome (2586656566852).

The spelling of 12201210221212 in words is "twelve trillion, two hundred one billion, two hundred ten million, two hundred twenty-one thousand, two hundred twelve".