12012112221112 has 64 divisors (see below), whose sum is σ = 24885602395200. Its totient is φ = 5406731151360.

The previous prime is 12012112221103. The next prime is 12012112221191. The reversal of 12012112221112 is 21112221121021.

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 12012112221112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76460562 + ... + 76617502.

It is an arithmetic number, because the mean of its divisors is an integer number (388837537425).

Almost surely, 2^{12012112221112} is an apocalyptic number.

It is an amenable number.

12012112221112 is an abundant number, since it is smaller than the sum of its proper divisors (12873490174088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12012112221112 is a wasteful number, since it uses less digits than its factorization.

12012112221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181456 (or 181452 counting only the distinct ones).

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

Adding to 12012112221112 its reverse (21112221121021), we get a palindrome (33124333342133).

The spelling of 12012112221112 in words is "twelve trillion, twelve billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twelve".