22135123 has 4 divisors (see below), whose sum is σ = 22147528. Its totient is φ = 22122720.

The previous prime is 22135103. The next prime is 22135163. The reversal of 22135123 is 32153122.

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 22135123 - 2¹⁷ = 22004051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22135123.

It is not an unprimeable number, because it can be changed into a prime (22135103) 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, 2961 + ... + 7282.

It is an arithmetic number, because the mean of its divisors is an integer number (5536882).

Almost surely, 2^22135123 is an apocalyptic number.

22135123 is a deficient number, since it is larger than the sum of its proper divisors (12405).

22135123 is a wasteful number, since it uses less digits than its factorization.

22135123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12404.

The product of its digits is 360, while the sum is 19.

The square root of 22135123 is about 4704.7978702597. The cubic root of 22135123 is about 280.7764291855.

Adding to 22135123 its reverse (32153122), we get a palindrome (54288245).

It can be divided in two parts, 221 and 35123, that added together give a square (35344 = 188²).

The spelling of 22135123 in words is "twenty-two million, one hundred thirty-five thousand, one hundred twenty-three".