22223120220 has 144 divisors (see below), whose sum is σ = 77906162880. Its totient is φ = 5022471168.

The previous prime is 22223120173. The next prime is 22223120261. The reversal of 22223120220 is 2202132222.

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 = 22223120193 and 22223120202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13054 + ... + 211226.

It is an arithmetic number, because the mean of its divisors is an integer number (541015020).

Almost surely, 2^22223120220 is an apocalyptic number.

22223120220 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 22223120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38953081440).

22223120220 is an abundant number, since it is smaller than the sum of its proper divisors (55683042660).

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

22223120220 is a wasteful number, since it uses less digits than its factorization.

22223120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198284 (or 198279 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22223120220 its reverse (2202132222), we get a palindrome (24425252442).

The spelling of 22223120220 in words is "twenty-two billion, two hundred twenty-three million, one hundred twenty thousand, two hundred twenty".