22022012220 has 96 divisors (see below), whose sum is σ = 66429840960. Its totient is φ = 5418762240.

The previous prime is 22022012191. The next prime is 22022012227. The reversal of 22022012220 is 2221022022.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22022012220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022012227) 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, 4044700 + ... + 4050140.

It is an arithmetic number, because the mean of its divisors is an integer number (691977510).

Almost surely, 2^22022012220 is an apocalyptic number.

22022012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22022012220 is an abundant number, since it is smaller than the sum of its proper divisors (44407828740).

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

22022012220 is a wasteful number, since it uses less digits than its factorization.

22022012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10655 (or 10653 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 22022012220 its reverse (2221022022), we get a palindrome (24243034242).

The spelling of 22022012220 in words is "twenty-two billion, twenty-two million, twelve thousand, two hundred twenty".