2221204 has 6 divisors (see below), whose sum is σ = 3887114. Its totient is φ = 1110600.

The previous prime is 2221187. The next prime is 2221217. The reversal of 2221204 is 4021222.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 898704 = 1150^2 + 948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277647 + ... + 277654.

2^2221204 is an apocalyptic number.

It is an amenable number.

2221204 is a deficient number, since it is larger than the sum of its proper divisors (1665910).

2221204 is a wasteful number, since it uses less digits than its factorization.

2221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555305 (or 555303 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2221204 is about 1490.3704237538. The cubic root of 2221204 is about 130.4756539679.

Adding to 2221204 its reverse (4021222), we get a palindrome (6242426).

The spelling of 2221204 in words is "two million, two hundred twenty-one thousand, two hundred four".