20221100220020 has 48 divisors (see below), whose sum is σ = 48582880496640. Its totient is φ = 6925485794304.

The previous prime is 20221100219963. The next prime is 20221100220037. The reversal of 20221100220020 is 2002200112202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20221100219977 and 20221100220004.

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, 77607524 + ... + 77867643.

It is an arithmetic number, because the mean of its divisors is an integer number (1012143343680).

Almost surely, 2^{20221100220020} is an apocalyptic number.

20221100220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20221100220020 is an abundant number, since it is smaller than the sum of its proper divisors (28361780276620).

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

20221100220020 is a wasteful number, since it uses less digits than its factorization.

20221100220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155476112 (or 155476110 counting only the distinct ones).

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

Adding to 20221100220020 its reverse (2002200112202), we get a palindrome (22223300332222).

The spelling of 20221100220020 in words is "twenty trillion, two hundred twenty-one billion, one hundred million, two hundred twenty thousand, twenty".