22203 has 6 divisors (see below), whose sum is σ = 32084. Its totient is φ = 14796.

The previous prime is 22193. The next prime is 22229. The reversal of 22203 is 30222.

It is not a de Polignac number, because 22203 - 2⁵ = 22171 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2467 = 22203 / (2 + 2 + 2 + 0 + 3).

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (22273) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1225 + ... + 1242.

2²²²⁰³ is an apocalyptic number.

22203 is a deficient number, since it is larger than the sum of its proper divisors (9881).

22203 is a wasteful number, since it uses less digits than its factorization.

22203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2473 (or 2470 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 22203 is about 149.0067112583. The cubic root of 22203 is about 28.1063135132.

Adding to 22203 its reverse (30222), we get a palindrome (52425).

It can be divided in two parts, 22 and 203, that added together give a square (225 = 15²).

The spelling of 22203 in words is "twenty-two thousand, two hundred three", and thus it is an iban number.