12221002122112 has 32 divisors (see below), whose sum is σ = 27824603047920. Its totient is φ = 5237572337664.

The previous prime is 12221002122097. The next prime is 12221002122113. The reversal of 12221002122112 is 21122120012221.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 12221002122112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221002122113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6819754753 + ... + 6819756544.

Almost surely, 2^{12221002122112} is an apocalyptic number.

It is an amenable number.

12221002122112 is an abundant number, since it is smaller than the sum of its proper divisors (15603600925808).

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

12221002122112 is an equidigital number, since it uses as much as digits as its factorization.

12221002122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639511318 (or 13639511306 counting only the distinct ones).

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

Adding to 12221002122112 its reverse (21122120012221), we get a palindrome (33343122134333).

The spelling of 12221002122112 in words is "twelve trillion, two hundred twenty-one billion, two million, one hundred twenty-two thousand, one hundred twelve".