1204221 has 4 divisors (see below), whose sum is σ = 1605632. Its totient is φ = 802812.

The previous prime is 1204219. The next prime is 1204243. The reversal of 1204221 is 1224021.

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 not a de Polignac number, because 1204221 - 2¹ = 1204219 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1204197 and 1204206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204271) 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, 200701 + ... + 200706.

It is an arithmetic number, because the mean of its divisors is an integer number (401408).

2^1204221 is an apocalyptic number.

It is an amenable number.

1204221 is a deficient number, since it is larger than the sum of its proper divisors (401411).

1204221 is an equidigital number, since it uses as much as digits as its factorization.

1204221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401410.

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

The square root of 1204221 is about 1097.3700378633. The cubic root of 1204221 is about 106.3903078307.

Adding to 1204221 its reverse (1224021), we get a palindrome (2428242).

The spelling of 1204221 in words is "one million, two hundred four thousand, two hundred twenty-one".