22133321220 has 96 divisors (see below), whose sum is σ = 62469792000. Its totient is φ = 5855041024.

The previous prime is 22133321209. The next prime is 22133321239. The reversal of 22133321220 is 2212333122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11790922 + ... + 11792798.

It is an arithmetic number, because the mean of its divisors is an integer number (650727000).

Almost surely, 2^22133321220 is an apocalyptic number.

22133321220 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 22133321220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31234896000).

22133321220 is an abundant number, since it is smaller than the sum of its proper divisors (40336470780).

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

22133321220 is a wasteful number, since it uses less digits than its factorization.

22133321220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3357 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 22133321220 its reverse (2212333122), we get a palindrome (24345654342).

The spelling of 22133321220 in words is "twenty-two billion, one hundred thirty-three million, three hundred twenty-one thousand, two hundred twenty".