11220565 has 8 divisors (see below), whose sum is σ = 13483008. Its totient is φ = 8964240.

The previous prime is 11220553. The next prime is 11220623. The reversal of 11220565 is 56502211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11220565 - 2⁵ = 11220533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5244 + ... + 7066.

It is an arithmetic number, because the mean of its divisors is an integer number (1685376).

Almost surely, 2^11220565 is an apocalyptic number.

It is an amenable number.

11220565 is a deficient number, since it is larger than the sum of its proper divisors (2262443).

11220565 is a wasteful number, since it uses less digits than its factorization.

11220565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3059.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 11220565 is about 3349.7111815797. The cubic root of 11220565 is about 223.8746441998.

Adding to 11220565 its reverse (56502211), we get a palindrome (67722776).

The spelling of 11220565 in words is "eleven million, two hundred twenty thousand, five hundred sixty-five".