33303112220 has 144 divisors (see below), whose sum is σ = 87141250560. Its totient is φ = 10443541248.

The previous prime is 33303112187. The next prime is 33303112301. The reversal of 33303112220 is 2221130333.

It is a super-2 number, since 2×33303112220² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 33303112192 and 33303112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2229617 + ... + 2244503.

Almost surely, 2^33303112220 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 33303112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43570625280).

33303112220 is an abundant number, since it is smaller than the sum of its proper divisors (53838138340).

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

33303112220 is a wasteful number, since it uses less digits than its factorization.

33303112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14980 (or 14949 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33303112220 its reverse (2221130333), we get a palindrome (35524242553).

The spelling of 33303112220 in words is "thirty-three billion, three hundred three million, one hundred twelve thousand, two hundred twenty".