2020100212221 has 32 divisors (see below), whose sum is σ = 3404631836928. Its totient is φ = 1036748782080.

The previous prime is 2020100212171. The next prime is 2020100212223. The reversal of 2020100212221 is 1222120010202.

It is not a de Polignac number, because 2020100212221 - 2⁷ = 2020100212093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020100212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020100212223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99984960 + ... + 100005161.

It is an arithmetic number, because the mean of its divisors is an integer number (106394744904).

Almost surely, 2^{2020100212221} is an apocalyptic number.

2020100212221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2020100212221 is a deficient number, since it is larger than the sum of its proper divisors (1384531624707).

2020100212221 is a wasteful number, since it uses less digits than its factorization.

2020100212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199990181.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2020100212221 its reverse (1222120010202), we get a palindrome (3242220222423).

The spelling of 2020100212221 in words is "two trillion, twenty billion, one hundred million, two hundred twelve thousand, two hundred twenty-one".