22116617 has 4 divisors (see below), whose sum is σ = 22137876. Its totient is φ = 22095360.

The previous prime is 22116613. The next prime is 22116637. The reversal of 22116617 is 71661122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10310521 + 11806096 = 3211^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 22116617 - 2² = 22116613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22116613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (5534469).

Almost surely, 2^22116617 is an apocalyptic number.

It is an amenable number.

22116617 is a deficient number, since it is larger than the sum of its proper divisors (21259).

22116617 is a wasteful number, since it uses less digits than its factorization.

22116617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21258.

The product of its digits is 1008, while the sum is 26.

The square root of 22116617 is about 4702.8307432864. The cubic root of 22116617 is about 280.6981599522.

Adding to 22116617 its reverse (71661122), we get a palindrome (93777739).

The spelling of 22116617 in words is "twenty-two million, one hundred sixteen thousand, six hundred seventeen".