11220173 has 4 divisors (see below), whose sum is σ = 11373948. Its totient is φ = 11066400.

The previous prime is 11220151. The next prime is 11220179. The reversal of 11220173 is 37102211.

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 8168164 + 3052009 = 2858^2 + 1747^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220173 - 2²⁰ = 10171597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220179) 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 3 ways as a sum of consecutive naturals, for example, 76778 + ... + 76923.

It is an arithmetic number, because the mean of its divisors is an integer number (2843487).

Almost surely, 2^11220173 is an apocalyptic number.

It is an amenable number.

11220173 is a deficient number, since it is larger than the sum of its proper divisors (153775).

11220173 is an equidigital number, since it uses as much as digits as its factorization.

11220173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153774.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 11220173 is about 3349.6526685613. The cubic root of 11220173 is about 223.8720370856.

Adding to 11220173 its reverse (37102211), we get a palindrome (48322384).

The spelling of 11220173 in words is "eleven million, two hundred twenty thousand, one hundred seventy-three".