2020010221 has 4 divisors (see below), whose sum is σ = 2025426172. Its totient is φ = 2014594272.

The previous prime is 2020010203. The next prime is 2020010231. The reversal of 2020010221 is 1220100202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1340365321 + 679644900 = 36611^2 + 26070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020010221 - 2¹¹ = 2020008173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020010198 and 2020010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020010231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2707416 + ... + 2708161.

It is an arithmetic number, because the mean of its divisors is an integer number (506356543).

Almost surely, 2^2020010221 is an apocalyptic number.

It is an amenable number.

2020010221 is a deficient number, since it is larger than the sum of its proper divisors (5415951).

2020010221 is an equidigital number, since it uses as much as digits as its factorization.

2020010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5415950.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 2020010221 is about 44944.5238154772. The cubic root of 2020010221 is about 1264.1089969449.

Adding to 2020010221 its reverse (1220100202), we get a palindrome (3240110423).

The spelling of 2020010221 in words is "two billion, twenty million, ten thousand, two hundred twenty-one".