22111211222020 has 48 divisors (see below), whose sum is σ = 48205642590000. Its totient is φ = 8509112514560.

The previous prime is 22111211221993. The next prime is 22111211222021. The reversal of 22111211222020 is 2022211211122.

It can be written as a sum of positive squares in 8 ways, for example, as 443619938304 + 21667591283716 = 666048^2 + 4654846^2 .

It is not an unprimeable number, because it can be changed into a prime (22111211222021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 67671145 + ... + 67997104.

It is an arithmetic number, because the mean of its divisors is an integer number (1004284220625).

Almost surely, 2^{22111211222020} is an apocalyptic number.

22111211222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111211222020 is an abundant number, since it is smaller than the sum of its proper divisors (26094431367980).

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

22111211222020 is a wasteful number, since it uses less digits than its factorization.

22111211222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135668568 (or 135668566 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22111211222020 its reverse (2022211211122), we get a palindrome (24133422433142).

The spelling of 22111211222020 in words is "twenty-two trillion, one hundred eleven billion, two hundred eleven million, two hundred twenty-two thousand, twenty".