2021001220220 has 12 divisors (see below), whose sum is σ = 4244102562504. Its totient is φ = 808400488080.

The previous prime is 2021001220213. The next prime is 2021001220253. The reversal of 2021001220220 is 220221001202.

It is a junction number, because it is equal to n+sod(n) for n = 2021001220195 and 2021001220204.

It is a congruent number.

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, 50525030486 + ... + 50525030525.

It is an arithmetic number, because the mean of its divisors is an integer number (353675213542).

Almost surely, 2^{2021001220220} is an apocalyptic number.

2021001220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021001220220 is an abundant number, since it is smaller than the sum of its proper divisors (2223101342284).

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

2021001220220 is a wasteful number, since it uses less digits than its factorization.

2021001220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101050061020 (or 101050061018 counting only the distinct ones).

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

Adding to 2021001220220 its reverse (220221001202), we get a palindrome (2241222221422).

The spelling of 2021001220220 in words is "two trillion, twenty-one billion, one million, two hundred twenty thousand, two hundred twenty".