22135873 has 4 divisors (see below), whose sum is σ = 22147840. Its totient is φ = 22123908.

The previous prime is 22135871. The next prime is 22135877. The reversal of 22135873 is 37853122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37853122 = 2 ⋅18926561.

It is a cyclic number.

It is not a de Polignac number, because 22135873 - 2¹ = 22135871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22135871) 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, 2553 + ... + 7126.

It is an arithmetic number, because the mean of its divisors is an integer number (5536960).

Almost surely, 2^22135873 is an apocalyptic number.

It is an amenable number.

22135873 is a deficient number, since it is larger than the sum of its proper divisors (11967).

22135873 is an equidigital number, since it uses as much as digits as its factorization.

22135873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11966.

The product of its digits is 10080, while the sum is 31.

The square root of 22135873 is about 4704.8775754529. The cubic root of 22135873 is about 280.7796003137.

Adding to 22135873 its reverse (37853122), we get a palindrome (59988995).

The spelling of 22135873 in words is "twenty-two million, one hundred thirty-five thousand, eight hundred seventy-three".