22122240220 has 12 divisors (see below), whose sum is σ = 46456704504. Its totient is φ = 8848896080.

The previous prime is 22122240209. The next prime is 22122240271. The reversal of 22122240220 is 2204222122.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 553055986 + ... + 553056025.

It is an arithmetic number, because the mean of its divisors is an integer number (3871392042).

Almost surely, 2^22122240220 is an apocalyptic number.

22122240220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122240220 is an abundant number, since it is smaller than the sum of its proper divisors (24334464284).

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

22122240220 is a wasteful number, since it uses less digits than its factorization.

22122240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106112020 (or 1106112018 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 22122240220 its reverse (2204222122), we get a palindrome (24326462342).

The spelling of 22122240220 in words is "twenty-two billion, one hundred twenty-two million, two hundred forty thousand, two hundred twenty".