2020100221220 has 12 divisors (see below), whose sum is σ = 4242210464604. Its totient is φ = 808040088480.

The previous prime is 2020100221219. The next prime is 2020100221247. The reversal of 2020100221220 is 221220010202.

It can be written as a sum of positive squares in 2 ways, for example, as 1193324651236 + 826775569984 = 1092394^2 + 909272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2020100221195 and 2020100221204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50502505511 + ... + 50502505550.

It is an arithmetic number, because the mean of its divisors is an integer number (353517538717).

Almost surely, 2^{2020100221220} is an apocalyptic number.

2020100221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020100221220 is an abundant number, since it is smaller than the sum of its proper divisors (2222110243384).

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

2020100221220 is a wasteful number, since it uses less digits than its factorization.

2020100221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101005011070 (or 101005011068 counting only the distinct ones).

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

Adding to 2020100221220 its reverse (221220010202), we get a palindrome (2241320231422).

The spelling of 2020100221220 in words is "two trillion, twenty billion, one hundred million, two hundred twenty-one thousand, two hundred twenty".