22237 has 4 divisors (see below), whose sum is σ = 22876. Its totient is φ = 21600.

The previous prime is 22229. The next prime is 22247. The reversal of 22237 is 73222.

It is a happy number.

22237 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19321 + 2916 = 139^2 + 54^2 .

It is a cyclic number.

It is not a de Polignac number, because 22237 - 2³ = 22229 is a prime.

It is a super-3 number, since 3×22237³ = 32987533398159, which contains 333 as substring.

It is a Duffinian number.

It is a plaindrome in base 9, base 10 and base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 22237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247) 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, 264 + ... + 337.

It is an arithmetic number, because the mean of its divisors is an integer number (5719).

2²²²³⁷ is an apocalyptic number.

It is an amenable number.

22237 is a deficient number, since it is larger than the sum of its proper divisors (639).

22237 is an equidigital number, since it uses as much as digits as its factorization.

22237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its digits is 168, while the sum is 16.

The square root of 22237 is about 149.1207564358. The cubic root of 22237 is about 28.1206528261.

Adding to 22237 its reverse (73222), we get a palindrome (95459).

The spelling of 22237 in words is "twenty-two thousand, two hundred thirty-seven".