22223312220 has 192 divisors, whose sum is σ = 68042612736. Its totient is φ = 5396705280.

The previous prime is 22223312197. The next prime is 22223312227. The reversal of 22223312220 is 2221332222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223312227) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7206799 + ... + 7209881.

It is an arithmetic number, because the mean of its divisors is an integer number (354388608).

Almost surely, 2^22223312220 is an apocalyptic number.

22223312220 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 22223312220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34021306368).

22223312220 is an abundant number, since it is smaller than the sum of its proper divisors (45819300516).

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

22223312220 is a wasteful number, since it uses less digits than its factorization.

22223312220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340 (or 3338 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 22223312220 its reverse (2221332222), we get a palindrome (24444644442).

The spelling of 22223312220 in words is "twenty-two billion, two hundred twenty-three million, three hundred twelve thousand, two hundred twenty".