22220366868 has 144 divisors (see below), whose sum is σ = 70161122304. Its totient is φ = 5782440960.

The previous prime is 22220366821. The next prime is 22220366869. The reversal of 22220366868 is 86866302222.

22220366868 is a `hidden beast` number, since 2 + 2 + 220 + 366 + 8 + 68 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22220366869) 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 47 ways as a sum of consecutive naturals, for example, 49146 + ... + 216462.

It is an arithmetic number, because the mean of its divisors is an integer number (487230016).

Almost surely, 2^22220366868 is an apocalyptic number.

22220366868 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22220366868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35080561152).

22220366868 is an abundant number, since it is smaller than the sum of its proper divisors (47940755436).

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

22220366868 is a wasteful number, since it uses less digits than its factorization.

22220366868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167382 (or 167377 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 22220366868 in words is "twenty-two billion, two hundred twenty million, three hundred sixty-six thousand, eight hundred sixty-eight".