22221221112020 has 48 divisors (see below), whose sum is σ = 53367186044928. Its totient is φ = 7613525041920.

The previous prime is 22221221112007. The next prime is 22221221112071. The reversal of 22221221112020 is 2021112212222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22221221111983 and 22221221112001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53744777 + ... + 54156656.

It is an arithmetic number, because the mean of its divisors is an integer number (1111816375936).

Almost surely, 2^{22221221112020} is an apocalyptic number.

22221221112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22221221112020 is an abundant number, since it is smaller than the sum of its proper divisors (31145964932908).

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

22221221112020 is a wasteful number, since it uses less digits than its factorization.

22221221112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107902920 (or 107902918 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22221221112020 its reverse (2021112212222), we get a palindrome (24242333324242).

The spelling of 22221221112020 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred twelve thousand, twenty".