12012210221212 has 24 divisors (see below), whose sum is σ = 21041271722016. Its totient is φ = 6000418859328.

The previous prime is 12012210221183. The next prime is 12012210221227. The reversal of 12012210221212 is 21212201221021.

It is a self number, because there is not a number n which added to its sum of digits gives 12012210221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104194233 + ... + 104309455.

It is an arithmetic number, because the mean of its divisors is an integer number (876719655084).

Almost surely, 2^{12012210221212} is an apocalyptic number.

It is an amenable number.

12012210221212 is a deficient number, since it is larger than the sum of its proper divisors (9029061500804).

12012210221212 is a wasteful number, since it uses less digits than its factorization.

12012210221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139677 (or 139675 counting only the distinct ones).

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

Adding to 12012210221212 its reverse (21212201221021), we get a palindrome (33224411442233).

The spelling of 12012210221212 in words is "twelve trillion, twelve billion, two hundred ten million, two hundred twenty-one thousand, two hundred twelve".