2204421 has 4 divisors (see below), whose sum is σ = 2939232. Its totient is φ = 1469612.

The previous prime is 2204393. The next prime is 2204431. The reversal of 2204421 is 1244022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2204421 - 2¹⁴ = 2188037 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2204421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367401 + ... + 367406.

It is an arithmetic number, because the mean of its divisors is an integer number (734808).

2^2204421 is an apocalyptic number.

It is an amenable number.

2204421 is a deficient number, since it is larger than the sum of its proper divisors (734811).

2204421 is an equidigital number, since it uses as much as digits as its factorization.

2204421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734810.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2204421 is about 1484.7292682506. The cubic root of 2204421 is about 130.1462063141.

Adding to 2204421 its reverse (1244022), we get a palindrome (3448443).

The spelling of 2204421 in words is "two million, two hundred four thousand, four hundred twenty-one".