11217149 has 8 divisors (see below), whose sum is σ = 11580408. Its totient is φ = 10858240.

The previous prime is 11217121. The next prime is 11217181. The reversal of 11217149 is 94171211.

It can be written as a sum of positive squares in 4 ways, for example, as 280900 + 10936249 = 530^2 + 3307^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11217149 - 2²⁰ = 10168573 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 (11217749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4619 + ... + 6615.

It is an arithmetic number, because the mean of its divisors is an integer number (1447551).

Almost surely, 2^11217149 is an apocalyptic number.

It is an amenable number.

11217149 is a deficient number, since it is larger than the sum of its proper divisors (363259).

11217149 is a wasteful number, since it uses less digits than its factorization.

11217149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175.

The product of its digits is 504, while the sum is 26.

The square root of 11217149 is about 3349.2012480590. The cubic root of 11217149 is about 223.8519230206.

The spelling of 11217149 in words is "eleven million, two hundred seventeen thousand, one hundred forty-nine".