22111011222020 has 144 divisors (see below), whose sum is σ = 54411534112320. Its totient is φ = 7525147666176.

The previous prime is 22111011222017. The next prime is 22111011222043. The reversal of 22111011222020 is 2022211011122.

It is a self number, because there is not a number n which added to its sum of digits gives 22111011222020.

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, 1298576747 + ... + 1298593773.

It is an arithmetic number, because the mean of its divisors is an integer number (377857875780).

Almost surely, 2^{22111011222020} is an apocalyptic number.

22111011222020 is a gapful number since it is divisible by the number (20) 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 22111011222020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27205767056160).

22111011222020 is an abundant number, since it is smaller than the sum of its proper divisors (32300522890300).

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

22111011222020 is a wasteful number, since it uses less digits than its factorization.

22111011222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26722 (or 26713 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 22111011222020 its reverse (2022211011122), we get a palindrome (24133222233142).

The spelling of 22111011222020 in words is "twenty-two trillion, one hundred eleven billion, eleven million, two hundred twenty-two thousand, twenty".