33221120220 has 48 divisors (see below), whose sum is σ = 103354597920. Its totient is φ = 8858965248.

The previous prime is 33221120183. The next prime is 33221120267. The reversal of 33221120220 is 2202112233.

33221120220 is a `hidden beast` number, since 3 + 322 + 1 + 120 + 220 = 666.

It is a super-2 number, since 2×33221120220² (a number of 22 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 33221120193 and 33221120202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30759757 + ... + 30760836.

It is an arithmetic number, because the mean of its divisors is an integer number (2153220790).

Almost surely, 2^33221120220 is an apocalyptic number.

33221120220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33221120220 is an abundant number, since it is smaller than the sum of its proper divisors (70133477700).

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

33221120220 is a wasteful number, since it uses less digits than its factorization.

33221120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61520611 (or 61520603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 33221120220 its reverse (2202112233), we get a palindrome (35423232453).

The spelling of 33221120220 in words is "thirty-three billion, two hundred twenty-one million, one hundred twenty thousand, two hundred twenty".