22231223 has 16 divisors (see below), whose sum is σ = 27131904. Its totient is φ = 17781120.

The previous prime is 22231219. The next prime is 22231241. The reversal of 22231223 is 32213222.

It is not a de Polignac number, because 22231223 - 2² = 22231219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22231723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14378 + ... + 15848.

It is an arithmetic number, because the mean of its divisors is an integer number (1695744).

Almost surely, 2^22231223 is an apocalyptic number.

22231223 is a deficient number, since it is larger than the sum of its proper divisors (4900681).

22231223 is a wasteful number, since it uses less digits than its factorization.

22231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its digits is 288, while the sum is 17.

The square root of 22231223 is about 4714.9997879109. Note that the first 3 decimals coincide. The cubic root of 22231223 is about 281.1821743936.

Adding to 22231223 its reverse (32213222), we get a palindrome (54444445).

The spelling of 22231223 in words is "twenty-two million, two hundred thirty-one thousand, two hundred twenty-three".