22117005 has 12 divisors (see below), whose sum is σ = 38336220. Its totient is φ = 11795712.

The previous prime is 22117003. The next prime is 22117013. The reversal of 22117005 is 50071122.

It can be written as a sum of positive squares in 2 ways, for example, as 15163236 + 6953769 = 3894^2 + 2637^2 .

It is not a de Polignac number, because 22117005 - 2¹ = 22117003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22117003) 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, 245700 + ... + 245789.

It is an arithmetic number, because the mean of its divisors is an integer number (3194685).

Almost surely, 2^22117005 is an apocalyptic number.

It is an amenable number.

22117005 is a deficient number, since it is larger than the sum of its proper divisors (16219215).

22117005 is a wasteful number, since it uses less digits than its factorization.

22117005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491500 (or 491497 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 22117005 is about 4702.8719948559. The cubic root of 22117005 is about 280.6998014065.

Adding to 22117005 its reverse (50071122), we get a palindrome (72188127).

It can be divided in two parts, 2211 and 7005, that added together give a square (9216 = 96²).

The spelling of 22117005 in words is "twenty-two million, one hundred seventeen thousand, five".