13120217 has 8 divisors (see below), whose sum is σ = 14509920. Its totient is φ = 11763360.

The previous prime is 13120213. The next prime is 13120231. The reversal of 13120217 is 71202131.

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 13120217 - 2² = 13120213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13120195 and 13120204.

It is not an unprimeable number, because it can be changed into a prime (13120213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7367 + ... + 8972.

It is an arithmetic number, because the mean of its divisors is an integer number (1813740).

Almost surely, 2^13120217 is an apocalyptic number.

It is an amenable number.

13120217 is a deficient number, since it is larger than the sum of its proper divisors (1389703).

13120217 is a wasteful number, since it uses less digits than its factorization.

13120217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16423.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 13120217 is about 3622.1840096826. The cubic root of 13120217 is about 235.8560419087.

Adding to 13120217 its reverse (71202131), we get a palindrome (84322348).

The spelling of 13120217 in words is "thirteen million, one hundred twenty thousand, two hundred seventeen".