12001111220000 has 240 divisors, whose sum is σ = 34830798976512. Its totient is φ = 3981934080000.

The previous prime is 12001111219973. The next prime is 12001111220029. The reversal of 12001111220000 is 2211110021.

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 39 ways as a sum of consecutive naturals, for example, 2957384 + ... + 5722616.

Almost surely, 2^{12001111220000} is an apocalyptic number.

12001111220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12001111220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17415399488256).

12001111220000 is an abundant number, since it is smaller than the sum of its proper divisors (22829687756512).

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

12001111220000 is an equidigital number, since it uses as much as digits as its factorization.

12001111220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765301 (or 2765278 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12001111220000 its reverse (2211110021), we get a palindrome (12003322330021).

The spelling of 12001111220000 in words is "twelve trillion, one billion, one hundred eleven million, two hundred twenty thousand".