11217899 has 8 divisors (see below), whose sum is σ = 13986048. Its totient is φ = 8741160.

The previous prime is 11217893. The next prime is 11217911. The reversal of 11217899 is 99871211.

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 11217899 - 2¹⁶ = 11152363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11217893) 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, 72767 + ... + 72920.

It is an arithmetic number, because the mean of its divisors is an integer number (1748256).

Almost surely, 2^11217899 is an apocalyptic number.

11217899 is a deficient number, since it is larger than the sum of its proper divisors (2768149).

11217899 is a wasteful number, since it uses less digits than its factorization.

11217899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145705.

The product of its digits is 9072, while the sum is 38.

The square root of 11217899 is about 3349.3132131827. The cubic root of 11217899 is about 223.8569119651.

The spelling of 11217899 in words is "eleven million, two hundred seventeen thousand, eight hundred ninety-nine".