12111255200 has 144 divisors (see below), whose sum is σ = 32383302336. Its totient is φ = 4386508800.

The previous prime is 12111255193. The next prime is 12111255203. The reversal of 12111255200 is 255211121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (12111255203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2311784 + ... + 2317016.

It is an arithmetic number, because the mean of its divisors is an integer number (224884044).

Almost surely, 2^12111255200 is an apocalyptic number.

12111255200 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 12111255200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16191651168).

12111255200 is an abundant number, since it is smaller than the sum of its proper divisors (20272047136).

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

12111255200 is a wasteful number, since it uses less digits than its factorization.

12111255200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527 (or 5514 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 20.

Adding to 12111255200 its reverse (255211121), we get a palindrome (12366466321).

The spelling of 12111255200 in words is "twelve billion, one hundred eleven million, two hundred fifty-five thousand, two hundred".