12001121200100 has 72 divisors (see below), whose sum is σ = 27877716232800. Its totient is φ = 4470712012800.

The previous prime is 12001121200099. The next prime is 12001121200111. The reversal of 12001121200100 is 100212110021.

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 23 ways as a sum of consecutive naturals, for example, 53416541 + ... + 53640740.

Almost surely, 2^{12001121200100} is an apocalyptic number.

12001121200100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001121200100 is an abundant number, since it is smaller than the sum of its proper divisors (15876595032700).

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

12001121200100 is a wasteful number, since it uses less digits than its factorization.

12001121200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107057373 (or 107057366 counting only the distinct ones).

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

Adding to 12001121200100 its reverse (100212110021), we get a palindrome (12101333310121).

The spelling of 12001121200100 in words is "twelve trillion, one billion, one hundred twenty-one million, two hundred thousand, one hundred".