12000120011100 has 288 divisors, whose sum is σ = 42329602607040. Its totient is φ = 2898141742080.

The previous prime is 12000120011023. The next prime is 12000120011119. The reversal of 12000120011100 is 111002100021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1365019 + ... + 5085618.

It is an arithmetic number, because the mean of its divisors is an integer number (146977786830).

Almost surely, 2^{12000120011100} is an apocalyptic number.

12000120011100 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 12000120011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21164801303520).

12000120011100 is an abundant number, since it is smaller than the sum of its proper divisors (30329482595940).

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

12000120011100 is a wasteful number, since it uses less digits than its factorization.

12000120011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6450726 (or 6450713 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12000120011100 its reverse (111002100021), we get a palindrome (12111122111121).

The spelling of 12000120011100 in words is "twelve trillion, one hundred twenty million, eleven thousand, one hundred".