20021100222020 has 24 divisors (see below), whose sum is σ = 42576516931200. Its totient is φ = 7907067428832.

The previous prime is 20021100222017. The next prime is 20021100222037. The reversal of 20021100222020 is 2022200112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021100221986 and 20021100222004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6335789630 + ... + 6335792789.

It is an arithmetic number, because the mean of its divisors is an integer number (1774021538800).

Almost surely, 2^{20021100222020} is an apocalyptic number.

20021100222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021100222020 is an abundant number, since it is smaller than the sum of its proper divisors (22555416709180).

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

20021100222020 is a wasteful number, since it uses less digits than its factorization.

20021100222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12671582507 (or 12671582505 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20021100222020 its reverse (2022200112002), we get a palindrome (22043300334022).

The spelling of 20021100222020 in words is "twenty trillion, twenty-one billion, one hundred million, two hundred twenty-two thousand, twenty".