22112505 has 24 divisors (see below), whose sum is σ = 38458368. Its totient is φ = 11753376.

The previous prime is 22112491. The next prime is 22112507. The reversal of 22112505 is 50521122.

It is not a de Polignac number, because 22112505 - 2⁸ = 22112249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22112507) 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 23 ways as a sum of consecutive naturals, for example, 16594 + ... + 17876.

It is an arithmetic number, because the mean of its divisors is an integer number (1602432).

Almost surely, 2^22112505 is an apocalyptic number.

It is an amenable number.

22112505 is a deficient number, since it is larger than the sum of its proper divisors (16345863).

22112505 is a wasteful number, since it uses less digits than its factorization.

22112505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 22112505 is about 4702.3935394648. The cubic root of 22112505 is about 280.6807627409.

Adding to 22112505 its reverse (50521122), we get a palindrome (72633627).

The spelling of 22112505 in words is "twenty-two million, one hundred twelve thousand, five hundred five".