22109123 has 2 divisors, whose sum is σ = 22109124. Its totient is φ = 22109122.

The previous prime is 22109117. The next prime is 22109149. The reversal of 22109123 is 32190122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22109123 - 2¹⁶ = 22043587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22109095 and 22109104.

It is not a weakly prime, because it can be changed into another prime (22129123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11054561 + 11054562.

It is an arithmetic number, because the mean of its divisors is an integer number (11054562).

Almost surely, 2^22109123 is an apocalyptic number.

22109123 is a deficient number, since it is larger than the sum of its proper divisors (1).

22109123 is an equidigital number, since it uses as much as digits as its factorization.

22109123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 22109123 is about 4702.0339216131. The cubic root of 22109123 is about 280.6664524259. Note that the first 3 decimals are identical.

Adding to 22109123 its reverse (32190122), we get a palindrome (54299245).

The spelling of 22109123 in words is "twenty-two million, one hundred nine thousand, one hundred twenty-three".