12200128 has 56 divisors (see below), whose sum is σ = 26009600. Its totient is φ = 5660928.

The previous prime is 12200117. The next prime is 12200129. The reversal of 12200128 is 82100221.

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

It is not an unprimeable number, because it can be changed into a prime (12200129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96001 + ... + 96127.

Almost surely, 2^12200128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12200128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13004800).

12200128 is an abundant number, since it is smaller than the sum of its proper divisors (13809472).

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

12200128 is a wasteful number, since it uses less digits than its factorization.

12200128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 12200128 is about 3492.8681624132. The cubic root of 12200128 is about 230.2085568916.

Adding to 12200128 its reverse (82100221), we get a palindrome (94300349).

The spelling of 12200128 in words is "twelve million, two hundred thousand, one hundred twenty-eight".