12011112212212 has 36 divisors (see below), whose sum is σ = 21729877408260. Its totient is φ = 5809015639680.

The previous prime is 12011112212167. The next prime is 12011112212219. The reversal of 12011112212212 is 21221221111021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2005809382756 + 10005302829456 = 1416266^2 + 3163116^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12011112212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011112212219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7198128 + ... + 8708344.

It is an arithmetic number, because the mean of its divisors is an integer number (603607705785).

Almost surely, 2^{12011112212212} is an apocalyptic number.

It is an amenable number.

12011112212212 is a deficient number, since it is larger than the sum of its proper divisors (9718765196048).

12011112212212 is a wasteful number, since it uses less digits than its factorization.

12011112212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512352 (or 1512319 counting only the distinct ones).

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

Adding to 12011112212212 its reverse (21221221111021), we get a palindrome (33232333323233).

The spelling of 12011112212212 in words is "twelve trillion, eleven billion, one hundred twelve million, two hundred twelve thousand, two hundred twelve".