12012221201112 has 96 divisors (see below), whose sum is σ = 35496473622480. Its totient is φ = 3639470100480.

The previous prime is 12012221201083. The next prime is 12012221201129. The reversal of 12012221201112 is 21110212221021.

12012221201112 is a `hidden beast` number, since 120 + 12 + 221 + 201 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 3600948 + ... + 6082044.

Almost surely, 2^{12012221201112} is an apocalyptic number.

12012221201112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12012221201112 is an abundant number, since it is smaller than the sum of its proper divisors (23484252421368).

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

12012221201112 is a wasteful number, since it uses less digits than its factorization.

12012221201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487233 (or 2487226 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12012221201112 its reverse (21110212221021), we get a palindrome (33122433422133).

The spelling of 12012221201112 in words is "twelve trillion, twelve billion, two hundred twenty-one million, two hundred one thousand, one hundred twelve".