12182199128 has 128 divisors (see below), whose sum is σ = 26598196800. Its totient is φ = 5178163200.

The previous prime is 12182199103. The next prime is 12182199131. The reversal of 12182199128 is 82199128121.

It is a Cunningham number, because it is equal to 110373²-1.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18101000 + ... + 18101672.

Almost surely, 2^12182199128 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 12182199128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13299098400).

12182199128 is an abundant number, since it is smaller than the sum of its proper divisors (14415997672).

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

12182199128 is a wasteful number, since it uses less digits than its factorization.

12182199128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 929 counting only the distinct ones).

The product of its digits is 41472, while the sum is 44.

The spelling of 12182199128 in words is "twelve billion, one hundred eighty-two million, one hundred ninety-nine thousand, one hundred twenty-eight".