22123310220 has 192 divisors, whose sum is σ = 76207219200. Its totient is φ = 5283083520.

The previous prime is 22123310149. The next prime is 22123310267. The reversal of 22123310220 is 2201332122.

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 = 22123310193 and 22123310202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370186 + ... + 425774.

It is an arithmetic number, because the mean of its divisors is an integer number (396912600).

Almost surely, 2^22123310220 is an apocalyptic number.

22123310220 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 22123310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38103609600).

22123310220 is an abundant number, since it is smaller than the sum of its proper divisors (54083908980).

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

22123310220 is a wasteful number, since it uses less digits than its factorization.

22123310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55685 (or 55677 counting only the distinct ones).

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

Adding to 22123310220 its reverse (2201332122), we get a palindrome (24324642342).

The spelling of 22123310220 in words is "twenty-two billion, one hundred twenty-three million, three hundred ten thousand, two hundred twenty".