2221237 has 8 divisors (see below), whose sum is σ = 2367576. Its totient is φ = 2076672.

The previous prime is 2221231. The next prime is 2221249. The reversal of 2221237 is 7321222.

2221237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1052676 + 1168561 = 1026^2 + 1081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221237 - 2³ = 2221229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221231) by changing a digit.

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, 2943 + ... + 3619.

It is an arithmetic number, because the mean of its divisors is an integer number (295947).

2^2221237 is an apocalyptic number.

It is an amenable number.

2221237 is a deficient number, since it is larger than the sum of its proper divisors (146339).

2221237 is a wasteful number, since it uses less digits than its factorization.

2221237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887.

The product of its digits is 336, while the sum is 19.

The square root of 2221237 is about 1490.3814947858. The cubic root of 2221237 is about 130.4763001153.

Adding to 2221237 its reverse (7321222), we get a palindrome (9542459).

The spelling of 2221237 in words is "two million, two hundred twenty-one thousand, two hundred thirty-seven".