22120311220 has 24 divisors (see below), whose sum is σ = 53088747264. Its totient is φ = 7584106656.

The previous prime is 22120311197. The next prime is 22120311221. The reversal of 22120311220 is 2211302122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22120311194 and 22120311203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120311221) 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 7 ways as a sum of consecutive naturals, for example, 79000972 + ... + 79001251.

It is an arithmetic number, because the mean of its divisors is an integer number (2212031136).

Almost surely, 2^22120311220 is an apocalyptic number.

22120311220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22120311220 is an abundant number, since it is smaller than the sum of its proper divisors (30968436044).

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

22120311220 is a wasteful number, since it uses less digits than its factorization.

22120311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158002239 (or 158002237 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22120311220 its reverse (2211302122), we get a palindrome (24331613342).

The spelling of 22120311220 in words is "twenty-two billion, one hundred twenty million, three hundred eleven thousand, two hundred twenty".