12001112221122 has 24 divisors (see below), whose sum is σ = 26003085495660. Its totient is φ = 4000266789120.

The previous prime is 12001112221057. The next prime is 12001112221141. The reversal of 12001112221122 is 22112221110021.

12001112221122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11761806343401 + 239305877721 = 3429549^2 + 489189^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12001112221095 and 12001112221104.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7949079 + ... + 9337562.

Almost surely, 2^{12001112221122} is an apocalyptic number.

12001112221122 is an abundant number, since it is smaller than the sum of its proper divisors (14001973274538).

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

12001112221122 is a wasteful number, since it uses less digits than its factorization.

12001112221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325218 (or 17325215 counting only the distinct ones).

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

Adding to 12001112221122 its reverse (22112221110021), we get a palindrome (34113333331143).

The spelling of 12001112221122 in words is "twelve trillion, one billion, one hundred twelve million, two hundred twenty-one thousand, one hundred twenty-two".