12001122111000 has 128 divisors (see below), whose sum is σ = 40847455733760. Its totient is φ = 2909362928000.

The previous prime is 12001122110981. The next prime is 12001122111023. The reversal of 12001122111000 is 11122110021.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 31 ways as a sum of consecutive naturals, for example, 181802184 + ... + 181868183.

It is an arithmetic number, because the mean of its divisors is an integer number (319120747920).

Almost surely, 2^{12001122111000} is an apocalyptic number.

12001122111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001122111000 is an abundant number, since it is smaller than the sum of its proper divisors (28846333622760).

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

12001122111000 is a wasteful number, since it uses less digits than its factorization.

12001122111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363670402 (or 363670388 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12001122111000 its reverse (11122110021), we get a palindrome (12012244221021).

The spelling of 12001122111000 in words is "twelve trillion, one billion, one hundred twenty-two million, one hundred eleven thousand".