22130505 has 12 divisors (see below), whose sum is σ = 38359620. Its totient is φ = 11802912.

The previous prime is 22130503. The next prime is 22130513. The reversal of 22130505 is 50503122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3674889 + 18455616 = 1917^2 + 4296^2 .

It is not a de Polignac number, because 22130505 - 2¹ = 22130503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22130503) 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 11 ways as a sum of consecutive naturals, for example, 245850 + ... + 245939.

It is an arithmetic number, because the mean of its divisors is an integer number (3196635).

Almost surely, 2^22130505 is an apocalyptic number.

It is an amenable number.

22130505 is a deficient number, since it is larger than the sum of its proper divisors (16229115).

22130505 is a wasteful number, since it uses less digits than its factorization.

22130505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491800 (or 491797 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 22130505 is about 4704.3070690592. The cubic root of 22130505 is about 280.7569019130.

Adding to 22130505 its reverse (50503122), we get a palindrome (72633627).

The spelling of 22130505 in words is "twenty-two million, one hundred thirty thousand, five hundred five".