12211121012212 has 12 divisors (see below), whose sum is σ = 21405018284356. Its totient is φ = 6095401502400.

The previous prime is 12211121012203. The next prime is 12211121012219. The reversal of 12211121012212 is 21221012111221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8472791569636 + 3738329442576 = 2910806^2 + 1933476^2 .

It is a super-2 number, since 2×12211121012212² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12211121012212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211121012219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2539748223 + ... + 2539753030.

Almost surely, 2^{12211121012212} is an apocalyptic number.

It is an amenable number.

12211121012212 is a deficient number, since it is larger than the sum of its proper divisors (9193897272144).

12211121012212 is a wasteful number, since it uses less digits than its factorization.

12211121012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079501858 (or 5079501856 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12211121012212 its reverse (21221012111221), we get a palindrome (33432133123433).

The spelling of 12211121012212 in words is "twelve trillion, two hundred eleven billion, one hundred twenty-one million, twelve thousand, two hundred twelve".