12012220211212 has 12 divisors (see below), whose sum is σ = 22638415013536. Its totient is φ = 5544101635920.

The previous prime is 12012220211203. The next prime is 12012220211213. The reversal of 12012220211212 is 21211202221021.

It is a self number, because there is not a number n which added to its sum of digits gives 12012220211212.

It is not an unprimeable number, because it can be changed into a prime (12012220211213) 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, 115502117364 + ... + 115502117467.

Almost surely, 2^{12012220211212} is an apocalyptic number.

It is an amenable number.

12012220211212 is a deficient number, since it is larger than the sum of its proper divisors (10626194802324).

12012220211212 is a wasteful number, since it uses less digits than its factorization.

12012220211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231004234848 (or 231004234846 counting only the distinct ones).

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

Adding to 12012220211212 its reverse (21211202221021), we get a palindrome (33223422432233).

The spelling of 12012220211212 in words is "twelve trillion, twelve billion, two hundred twenty million, two hundred eleven thousand, two hundred twelve".