22321223 has 4 divisors (see below), whose sum is σ = 22330680. Its totient is φ = 22311768.

The previous prime is 22321217. The next prime is 22321231. The reversal of 22321223 is 32212322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22321223 - 2⁸ = 22320967 is a prime.

It is a super-3 number, since 3×22321223³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22321253) 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 3 ways as a sum of consecutive naturals, for example, 2093 + ... + 7001.

It is an arithmetic number, because the mean of its divisors is an integer number (5582670).

Almost surely, 2^22321223 is an apocalyptic number.

22321223 is a deficient number, since it is larger than the sum of its proper divisors (9457).

22321223 is an equidigital number, since it uses as much as digits as its factorization.

22321223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9456.

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

The square root of 22321223 is about 4724.5341569302. The cubic root of 22321223 is about 281.5611057505.

Adding to 22321223 its reverse (32212322), we get a palindrome (54533545).

The spelling of 22321223 in words is "twenty-two million, three hundred twenty-one thousand, two hundred twenty-three".