22023122220 has 144 divisors (see below), whose sum is σ = 73903415040. Its totient is φ = 5263708800.

The previous prime is 22023122201. The next prime is 22023122249. The reversal of 22023122220 is 2222132022.

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 = 22023122193 and 22023122202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62251 + ... + 218909.

It is an arithmetic number, because the mean of its divisors is an integer number (513218160).

Almost surely, 2^22023122220 is an apocalyptic number.

22023122220 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 22023122220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36951707520).

22023122220 is an abundant number, since it is smaller than the sum of its proper divisors (51880292820).

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

22023122220 is a wasteful number, since it uses less digits than its factorization.

22023122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156756 (or 156751 counting only the distinct ones).

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

Adding to 22023122220 its reverse (2222132022), we get a palindrome (24245254242).

The spelling of 22023122220 in words is "twenty-two billion, twenty-three million, one hundred twenty-two thousand, two hundred twenty".