12111101200 has 60 divisors (see below), whose sum is σ = 31742106768. Its totient is φ = 4404035200.

The previous prime is 12111101147. The next prime is 12111101203. The reversal of 12111101200 is 210111121.

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 (12111101203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1371862 + ... + 1380661.

Almost surely, 2^12111101200 is an apocalyptic number.

12111101200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111101200 is an abundant number, since it is smaller than the sum of its proper divisors (19631005568).

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

12111101200 is a wasteful number, since it uses less digits than its factorization.

12111101200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752552 (or 2752541 counting only the distinct ones).

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

Adding to 12111101200 its reverse (210111121), we get a palindrome (12321212321).

It can be divided in two parts, 12111 and 101200, that added together give a palindrome (113311).

The spelling of 12111101200 in words is "twelve billion, one hundred eleven million, one hundred one thousand, two hundred".