12111201221200 has 60 divisors (see below), whose sum is σ = 29190721236768. Its totient is φ = 4828903331200.

The previous prime is 12111201221173. The next prime is 12111201221221. The reversal of 12111201221200 is 212210211121.

12111201221200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

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, 48554062 + ... + 48802861.

Almost surely, 2^{12111201221200} is an apocalyptic number.

12111201221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111201221200 is an abundant number, since it is smaller than the sum of its proper divisors (17079520015568).

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

12111201221200 is a wasteful number, since it uses less digits than its factorization.

12111201221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97357252 (or 97357241 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12111201221200 its reverse (212210211121), we get a palindrome (12323411432321).

The spelling of 12111201221200 in words is "twelve trillion, one hundred eleven billion, two hundred one million, two hundred twenty-one thousand, two hundred".