1217117 has 4 divisors (see below), whose sum is σ = 1327776. Its totient is φ = 1106460.

The previous prime is 1217113. The next prime is 1217119. The reversal of 1217117 is 7117121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7117121 = 11 ⋅647011.

It is a cyclic number.

It is not a de Polignac number, because 1217117 - 2² = 1217113 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55313 + ... + 55334.

It is an arithmetic number, because the mean of its divisors is an integer number (331944).

2^1217117 is an apocalyptic number.

It is an amenable number.

1217117 is a deficient number, since it is larger than the sum of its proper divisors (110659).

1217117 is a wasteful number, since it uses less digits than its factorization.

1217117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110658.

The product of its digits is 98, while the sum is 20.

The square root of 1217117 is about 1103.2302570180. The cubic root of 1217117 is about 106.7687380153.

The spelling of 1217117 in words is "one million, two hundred seventeen thousand, one hundred seventeen".