22120123 has 4 divisors (see below), whose sum is σ = 23284360. Its totient is φ = 20955888.

The previous prime is 22120099. The next prime is 22120151. The reversal of 22120123 is 32102122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22120123 - 2¹³ = 22111931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120183) 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 in 3 ways as a sum of consecutive naturals, for example, 582090 + ... + 582127.

It is an arithmetic number, because the mean of its divisors is an integer number (5821090).

Almost surely, 2^22120123 is an apocalyptic number.

22120123 is a deficient number, since it is larger than the sum of its proper divisors (1164237).

22120123 is a wasteful number, since it uses less digits than its factorization.

22120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164236.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22120123 is about 4703.2034827339. The cubic root of 22120123 is about 280.7129915718.

Adding to 22120123 its reverse (32102122), we get a palindrome (54222245).

The spelling of 22120123 in words is "twenty-two million, one hundred twenty thousand, one hundred twenty-three".