22123242220 has 12 divisors (see below), whose sum is σ = 46458808704. Its totient is φ = 8849296880.

The previous prime is 22123242217. The next prime is 22123242227. The reversal of 22123242220 is 2224232122.

It is a junction number, because it is equal to n+sod(n) for n = 22123242191 and 22123242200.

It is not an unprimeable number, because it can be changed into a prime (22123242227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553081036 + ... + 553081075.

It is an arithmetic number, because the mean of its divisors is an integer number (3871567392).

Almost surely, 2^22123242220 is an apocalyptic number.

22123242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22123242220 is an abundant number, since it is smaller than the sum of its proper divisors (24335566484).

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

22123242220 is a wasteful number, since it uses less digits than its factorization.

22123242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106162120 (or 1106162118 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 22123242220 its reverse (2224232122), we get a palindrome (24347474342).

The spelling of 22123242220 in words is "twenty-two billion, one hundred twenty-three million, two hundred forty-two thousand, two hundred twenty".