22122221000220 has 144 divisors (see below), whose sum is σ = 77510584071648. Its totient is φ = 5047494266880.

The previous prime is 22122221000213. The next prime is 22122221000261. The reversal of 22122221000220 is 2200012222122.

22122221000220 is a `hidden beast` number, since 2 + 212 + 22 + 210 + 0 + 0 + 220 = 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 = 22122221000193 and 22122221000202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 328579249 + ... + 328646568.

It is an arithmetic number, because the mean of its divisors is an integer number (538267944942).

Almost surely, 2^{22122221000220} is an apocalyptic number.

22122221000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22122221000220 is an abundant number, since it is smaller than the sum of its proper divisors (55388363071428).

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

22122221000220 is a wasteful number, since it uses less digits than its factorization.

22122221000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657225860 (or 657225855 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22122221000220 its reverse (2200012222122), we get a palindrome (24322233222342).

The spelling of 22122221000220 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty", and thus it is an aban number.