22016505 has 32 divisors (see below), whose sum is σ = 40449024. Its totient is φ = 10017216.

The previous prime is 22016471. The next prime is 22016507. The reversal of 22016505 is 50561022.

It is not a de Polignac number, because 22016505 - 2¹⁶ = 21950969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (22016507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31894 + ... + 32576.

It is an arithmetic number, because the mean of its divisors is an integer number (1264032).

Almost surely, 2^22016505 is an apocalyptic number.

It is an amenable number.

22016505 is a deficient number, since it is larger than the sum of its proper divisors (18432519).

22016505 is a wasteful number, since it uses less digits than its factorization.

22016505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 22016505 is about 4692.1748688641. The cubic root of 22016505 is about 280.2739877603.

Adding to 22016505 its reverse (50561022), we get a palindrome (72577527).

The spelling of 22016505 in words is "twenty-two million, sixteen thousand, five hundred five".