22109323 has 4 divisors (see below), whose sum is σ = 22119040. Its totient is φ = 22099608.

The previous prime is 22109287. The next prime is 22109341. The reversal of 22109323 is 32390122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 32390122 = 2 ⋅16195061.

It is a cyclic number.

It is not a de Polignac number, because 22109323 - 2⁹ = 22108811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22109294 and 22109303.

It is not an unprimeable number, because it can be changed into a prime (22109363) 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, 598 + ... + 6676.

It is an arithmetic number, because the mean of its divisors is an integer number (5529760).

Almost surely, 2^22109323 is an apocalyptic number.

22109323 is a deficient number, since it is larger than the sum of its proper divisors (9717).

22109323 is an equidigital number, since it uses as much as digits as its factorization.

22109323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9716.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 22109323 is about 4702.0551889573. The cubic root of 22109323 is about 280.6672987299.

Adding to 22109323 its reverse (32390122), we get a palindrome (54499445).

The spelling of 22109323 in words is "twenty-two million, one hundred nine thousand, three hundred twenty-three".