12011212112212 has 24 divisors (see below), whose sum is σ = 21076179687360. Its totient is φ = 5989452374400.

The previous prime is 12011212112209. The next prime is 12011212112227. The reversal of 12011212112212 is 21221121211021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 12011212112212.

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, 7458489 + ... + 8924767.

It is an arithmetic number, because the mean of its divisors is an integer number (878174153640).

Almost surely, 2^{12011212112212} is an apocalyptic number.

It is an amenable number.

12011212112212 is a deficient number, since it is larger than the sum of its proper divisors (9064967575148).

12011212112212 is a wasteful number, since it uses less digits than its factorization.

12011212112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471791 (or 1471789 counting only the distinct ones).

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

Adding to 12011212112212 its reverse (21221121211021), we get a palindrome (33232333323233).

The spelling of 12011212112212 in words is "twelve trillion, eleven billion, two hundred twelve million, one hundred twelve thousand, two hundred twelve".