22220033220 has 288 divisors, whose sum is σ = 84167516160. Its totient is φ = 4609716480.

The previous prime is 22220033219. The next prime is 22220033239. The reversal of 22220033220 is 2233002222.

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 = 22220033193 and 22220033202.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14399769 + ... + 14401311.

It is an arithmetic number, because the mean of its divisors is an integer number (292248320).

Almost surely, 2^22220033220 is an apocalyptic number.

22220033220 is a gapful number since it is divisible by the number (20) 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 22220033220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42083758080).

22220033220 is an abundant number, since it is smaller than the sum of its proper divisors (61947482940).

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

22220033220 is a wasteful number, since it uses less digits than its factorization.

22220033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2615 (or 2610 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 22220033220 its reverse (2233002222), we get a palindrome (24453035442).

The spelling of 22220033220 in words is "twenty-two billion, two hundred twenty million, thirty-three thousand, two hundred twenty".