11217207 has 8 divisors (see below), whose sum is σ = 15179776. Its totient is φ = 7366392.

The previous prime is 11217197. The next prime is 11217211. The reversal of 11217207 is 70271211.

It is a happy number.

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

It is not a de Polignac number, because 11217207 - 2⁴ = 11217191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11217007) 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 7 ways as a sum of consecutive naturals, for example, 27703 + ... + 28104.

It is an arithmetic number, because the mean of its divisors is an integer number (1897472).

Almost surely, 2^11217207 is an apocalyptic number.

11217207 is a deficient number, since it is larger than the sum of its proper divisors (3962569).

11217207 is an equidigital number, since it uses as much as digits as its factorization.

11217207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55877.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 11217207 is about 3349.2099068288. The cubic root of 11217207 is about 223.8523088402.

Adding to 11217207 its reverse (70271211), we get a palindrome (81488418).

The spelling of 11217207 in words is "eleven million, two hundred seventeen thousand, two hundred seven".