2121204 has 24 divisors (see below), whose sum is σ = 5056128. Its totient is φ = 691840.

The previous prime is 2121199. The next prime is 2121239. The reversal of 2121204 is 4021212.

2121204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2121204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 2444.

It is an arithmetic number, because the mean of its divisors is an integer number (210672).

2^2121204 is an apocalyptic number.

It is an amenable number.

2121204 is an abundant number, since it is smaller than the sum of its proper divisors (2934924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2121204 is a wasteful number, since it uses less digits than its factorization.

2121204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3813 counting only the distinct ones).

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

The square root of 2121204 is about 1456.4353744674. The cubic root of 2121204 is about 128.4874802965.

Adding to 2121204 its reverse (4021212), we get a palindrome (6142416).

The spelling of 2121204 in words is "two million, one hundred twenty-one thousand, two hundred four".