2000020221 has 16 divisors (see below), whose sum is σ = 3035262720. Its totient is φ = 1300825440.

The previous prime is 2000020153. The next prime is 2000020241. The reversal of 2000020221 is 1220200002.

It is not a de Polignac number, because 2000020221 - 2²⁵ = 1966465789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000020241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 902245 + ... + 904458.

It is an arithmetic number, because the mean of its divisors is an integer number (189703920).

Almost surely, 2^2000020221 is an apocalyptic number.

It is an amenable number.

2000020221 is a deficient number, since it is larger than the sum of its proper divisors (1035242499).

2000020221 is a wasteful number, since it uses less digits than its factorization.

2000020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806753 (or 1806747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2000020221 is about 44721.5856270772. The cubic root of 2000020221 is about 1259.9252960245.

Adding to 2000020221 its reverse (1220200002), we get a palindrome (3220220223).

The spelling of 2000020221 in words is "two billion, twenty thousand, two hundred twenty-one".