22331023220 has 96 divisors (see below), whose sum is σ = 52022476800. Its totient is φ = 7984080000.

The previous prime is 22331023213. The next prime is 22331023229. The reversal of 22331023220 is 2232013322.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22331023192 and 22331023201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22331023229) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 4359821 + ... + 4364939.

It is an arithmetic number, because the mean of its divisors is an integer number (541900800).

Almost surely, 2^22331023220 is an apocalyptic number.

22331023220 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 22331023220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26011238400).

22331023220 is an abundant number, since it is smaller than the sum of its proper divisors (29691453580).

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

22331023220 is a wasteful number, since it uses less digits than its factorization.

22331023220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469 (or 5467 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 22331023220 its reverse (2232013322), we get a palindrome (24563036542).

It can be divided in two parts, 2233102 and 3220, that added together give a palindrome (2236322).

The spelling of 22331023220 in words is "twenty-two billion, three hundred thirty-one million, twenty-three thousand, two hundred twenty".