12101111200 has 72 divisors (see below), whose sum is σ = 29982893472. Its totient is φ = 4768177920.

The previous prime is 12101111171. The next prime is 12101111203. The reversal of 12101111200 is 211110121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (12101111203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59284 + ... + 166483.

It is an arithmetic number, because the mean of its divisors is an integer number (416429076).

Almost surely, 2^12101111200 is an apocalyptic number.

12101111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101111200 is an abundant number, since it is smaller than the sum of its proper divisors (17881782272).

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

12101111200 is a wasteful number, since it uses less digits than its factorization.

12101111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225854 (or 225841 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12101111200 its reverse (211110121), we get a palindrome (12312221321).

The spelling of 12101111200 in words is "twelve billion, one hundred one million, one hundred eleven thousand, two hundred".