12012221120122 has 16 divisors (see below), whose sum is σ = 18040528737000. Its totient is φ = 5998715338752.

The previous prime is 12012221120113. The next prime is 12012221120147. The reversal of 12012221120122 is 22102112221021.

It can be written as a sum of positive squares in 4 ways, for example, as 7733566103041 + 4278655017081 = 2780929^2 + 2068491^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12012221120122.

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 7 ways as a sum of consecutive naturals, for example, 5391738 + ... + 7286650.

Almost surely, 2^{12012221120122} is an apocalyptic number.

12012221120122 is a deficient number, since it is larger than the sum of its proper divisors (6028307616878).

12012221120122 is a wasteful number, since it uses less digits than its factorization.

12012221120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898817.

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

Adding to 12012221120122 its reverse (22102112221021), we get a palindrome (34114333341143).

The spelling of 12012221120122 in words is "twelve trillion, twelve billion, two hundred twenty-one million, one hundred twenty thousand, one hundred twenty-two".