12033311100 has 144 divisors (see below), whose sum is σ = 35151916800. Its totient is φ = 3178137600.

The previous prime is 12033311077. The next prime is 12033311107. The reversal of 12033311100 is 111333021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12033311100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033311107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21073815 + ... + 21074385.

Almost surely, 2^12033311100 is an apocalyptic number.

12033311100 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 12033311100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17575958400).

12033311100 is an abundant number, since it is smaller than the sum of its proper divisors (23118605700).

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

12033311100 is a wasteful number, since it uses less digits than its factorization.

12033311100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 12033311100 its reverse (111333021), we get a palindrome (12144644121).

The spelling of 12033311100 in words is "twelve billion, thirty-three million, three hundred eleven thousand, one hundred".