22221222112020 has 24 divisors (see below), whose sum is σ = 62219421913824. Its totient is φ = 5925659229856.

The previous prime is 22221222111989. The next prime is 22221222112069. The reversal of 22221222112020 is 2021122212222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185176850874 + ... + 185176850993.

It is an arithmetic number, because the mean of its divisors is an integer number (2592475913076).

Almost surely, 2^{22221222112020} is an apocalyptic number.

22221222112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221222112020 is an abundant number, since it is smaller than the sum of its proper divisors (39998199801804).

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

22221222112020 is a wasteful number, since it uses less digits than its factorization.

22221222112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370353701879 (or 370353701877 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22221222112020 its reverse (2021122212222), we get a palindrome (24242344324242).

The spelling of 22221222112020 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, twenty".