11217407 has 2 divisors, whose sum is σ = 11217408. Its totient is φ = 11217406.

The previous prime is 11217389. The next prime is 11217413. The reversal of 11217407 is 70471211.

11217407 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (70471211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11217407 - 2⁶ = 11217343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11217007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5608703 + 5608704.

It is an arithmetic number, because the mean of its divisors is an integer number (5608704).

Almost surely, 2^11217407 is an apocalyptic number.

11217407 is a deficient number, since it is larger than the sum of its proper divisors (1).

11217407 is an equidigital number, since it uses as much as digits as its factorization.

11217407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 11217407 is about 3349.2397644839. The cubic root of 11217407 is about 223.8536392426.

Adding to 11217407 its reverse (70471211), we get a palindrome (81688618).

The spelling of 11217407 in words is "eleven million, two hundred seventeen thousand, four hundred seven".