111002200128 has 168 divisors, whose sum is σ = 338300202240. Its totient is φ = 34677780480.

The previous prime is 111002200103. The next prime is 111002200129. The reversal of 111002200128 is 821002200111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 111002200128.

It is not an unprimeable number, because it can be changed into a prime (111002200129) 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, 2316573 + ... + 2364003.

It is an arithmetic number, because the mean of its divisors is an integer number (2013691680).

Almost surely, 2^111002200128 is an apocalyptic number.

111002200128 is a gapful number since it is divisible by the number (18) 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 111002200128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169150101120).

111002200128 is an abundant number, since it is smaller than the sum of its proper divisors (227298002112).

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

111002200128 is a wasteful number, since it uses less digits than its factorization.

111002200128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47705 (or 47692 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111002200128 its reverse (821002200111), we get a palindrome (932004400239).

The spelling of 111002200128 in words is "one hundred eleven billion, two million, two hundred thousand, one hundred twenty-eight".