12210022220212 has 12 divisors (see below), whose sum is σ = 21717826408516. Its totient is φ = 6004928960640.

The previous prime is 12210022220183. The next prime is 12210022220257. The reversal of 12210022220212 is 21202222001221.

It can be written as a sum of positive squares in 2 ways, for example, as 5151202179876 + 7058820040336 = 2269626^2 + 2656844^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12210022220212.

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, 25020537093 + ... + 25020537580.

Almost surely, 2^{12210022220212} is an apocalyptic number.

It is an amenable number.

12210022220212 is a deficient number, since it is larger than the sum of its proper divisors (9507804188304).

12210022220212 is a wasteful number, since it uses less digits than its factorization.

12210022220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50041074738 (or 50041074736 counting only the distinct ones).

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

Adding to 12210022220212 its reverse (21202222001221), we get a palindrome (33412244221433).

The spelling of 12210022220212 in words is "twelve trillion, two hundred ten billion, twenty-two million, two hundred twenty thousand, two hundred twelve".