11009217 has 16 divisors (see below), whose sum is σ = 15664320. Its totient is φ = 6853632.

The previous prime is 11009191. The next prime is 11009261. The reversal of 11009217 is 71290011.

It is not a de Polignac number, because 11009217 - 2⁶ = 11009153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11009193 and 11009202.

It is not an unprimeable number, because it can be changed into a prime (11009267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6313 + ... + 7865.

It is an arithmetic number, because the mean of its divisors is an integer number (979020).

Almost surely, 2^11009217 is an apocalyptic number.

11009217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11009217 is a deficient number, since it is larger than the sum of its proper divisors (4655103).

11009217 is a wasteful number, since it uses less digits than its factorization.

11009217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 11009217 is about 3318.0140144369. The cubic root of 11009217 is about 222.4601081536.

Adding to 11009217 its reverse (71290011), we get a palindrome (82299228).

The spelling of 11009217 in words is "eleven million, nine thousand, two hundred seventeen".