2021201 has 24 divisors (see below), whose sum is σ = 2681280. Its totient is φ = 1505952.

The previous prime is 2021197. The next prime is 2021203. The reversal of 2021201 is 1021202.

It is not a de Polignac number, because 2021201 - 2² = 2021197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12020 + ... + 12186.

It is an arithmetic number, because the mean of its divisors is an integer number (111720).

2^2021201 is an apocalyptic number.

It is an amenable number.

2021201 is a deficient number, since it is larger than the sum of its proper divisors (660079).

2021201 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (2021200) it forms an eRAP, since the sums of their prime factors are consecutive (212 and 213).

2021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 2021201 is about 1421.6894878981. The cubic root of 2021201 is about 126.4357342019.

Adding to 2021201 its reverse (1021202), we get a palindrome (3042403).

Subtracting from 2021201 its reverse (1021202), we obtain a palindrome (999999).

It can be divided in two parts, 2021 and 201, that added together give a palindrome (2222).

The spelling of 2021201 in words is "two million, twenty-one thousand, two hundred one".