11172217 has 8 divisors (see below), whose sum is σ = 13065536. Its totient is φ = 9353232.

The previous prime is 11172199. The next prime is 11172233. The reversal of 11172217 is 71227111.

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

It is not a de Polignac number, because 11172217 - 2¹⁹ = 10647929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11172257) 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, 18258 + ... + 18859.

It is an arithmetic number, because the mean of its divisors is an integer number (1633192).

Almost surely, 2^11172217 is an apocalyptic number.

It is an amenable number.

11172217 is a deficient number, since it is larger than the sum of its proper divisors (1893319).

11172217 is an equidigital number, since it uses as much as digits as its factorization.

11172217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37167.

The product of its digits is 196, while the sum is 22.

The square root of 11172217 is about 3342.4866491880. The cubic root of 11172217 is about 223.5526320468.

Adding to 11172217 its reverse (71227111), we get a palindrome (82399328).

The spelling of 11172217 in words is "eleven million, one hundred seventy-two thousand, two hundred seventeen".