2021204 has 6 divisors (see below), whose sum is σ = 3537114. Its totient is φ = 1010600.

The previous prime is 2021203. The next prime is 2021219. The reversal of 2021204 is 4021202.

It can be written as a sum of positive squares in only one way, i.e., 1684804 + 336400 = 1298^2 + 580^2 .

It is a super-4 number, since 4×2021204⁴ (a number of 26 digits) contains 4444 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 252647 + ... + 252654.

It is an arithmetic number, because the mean of its divisors is an integer number (589519).

2^2021204 is an apocalyptic number.

It is an amenable number.

2021204 is a deficient number, since it is larger than the sum of its proper divisors (1515910).

2021204 is a wasteful number, since it uses less digits than its factorization.

2021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505305 (or 505303 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2021204 is about 1421.6905429804. The cubic root of 2021204 is about 126.4357967566.

Adding to 2021204 its reverse (4021202), we get a palindrome (6042406).

The spelling of 2021204 in words is "two million, twenty-one thousand, two hundred four".