22213031220 has 96 divisors (see below), whose sum is σ = 69604617600. Its totient is φ = 5880840192.

The previous prime is 22213031177. The next prime is 22213031257. The reversal of 22213031220 is 2213031222.

22213031220 is a `hidden beast` number, since 222 + 130 + 312 + 2 + 0 = 666.

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 = 22213031193 and 22213031202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72909 + ... + 223028.

It is an arithmetic number, because the mean of its divisors is an integer number (725048100).

Almost surely, 2^22213031220 is an apocalyptic number.

22213031220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22213031220 is an abundant number, since it is smaller than the sum of its proper divisors (47391586380).

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

22213031220 is a wasteful number, since it uses less digits than its factorization.

22213031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296094 (or 296086 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22213031220 its reverse (2213031222), we get a palindrome (24426062442).

The spelling of 22213031220 in words is "twenty-two billion, two hundred thirteen million, thirty-one thousand, two hundred twenty".