33112220112 has 120 divisors (see below), whose sum is σ = 96944699904. Its totient is φ = 10530508032.

The previous prime is 33112220093. The next prime is 33112220117. The reversal of 33112220112 is 21102221133.

33112220112 is a `hidden beast` number, since 331 + 1 + 2 + 220 + 112 = 666.

It is a super-3 number, since 3×33112220112³ (a number of 33 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33112220117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1302273 + ... + 1327455.

Almost surely, 2^33112220112 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 33112220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48472349952).

33112220112 is an abundant number, since it is smaller than the sum of its proper divisors (63832479792).

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

33112220112 is a wasteful number, since it uses less digits than its factorization.

33112220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25617 (or 25608 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 33112220112 its reverse (21102221133), we get a palindrome (54214441245).

The spelling of 33112220112 in words is "thirty-three billion, one hundred twelve million, two hundred twenty thousand, one hundred twelve".