2021200221 has 16 divisors (see below), whose sum is σ = 2913444800. Its totient is φ = 1242044928.

The previous prime is 2021200219. The next prime is 2021200231. The reversal of 2021200221 is 1220021202.

It is not a de Polignac number, because 2021200221 - 2¹ = 2021200219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021200197 and 2021200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021200201) 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, 477076 + ... + 481293.

It is an arithmetic number, because the mean of its divisors is an integer number (182090300).

Almost surely, 2^2021200221 is an apocalyptic number.

It is an amenable number.

2021200221 is a deficient number, since it is larger than the sum of its proper divisors (892244579).

2021200221 is a wasteful number, since it uses less digits than its factorization.

2021200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958428.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2021200221 is about 44957.7604090773. The cubic root of 2021200221 is about 1264.3571795847.

Adding to 2021200221 its reverse (1220021202), we get a palindrome (3241221423).

The spelling of 2021200221 in words is "two billion, twenty-one million, two hundred thousand, two hundred twenty-one".