12117013 has 4 divisors (see below), whose sum is σ = 12398848. Its totient is φ = 11835180.

The previous prime is 12117011. The next prime is 12117031. The reversal of 12117013 is 31071121.

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.

It is a cyclic number.

It is not a de Polignac number, because 12117013 - 2¹ = 12117011 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 (12117011) 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 3 ways as a sum of consecutive naturals, for example, 140853 + ... + 140938.

It is an arithmetic number, because the mean of its divisors is an integer number (3099712).

Almost surely, 2^12117013 is an apocalyptic number.

It is an amenable number.

12117013 is a deficient number, since it is larger than the sum of its proper divisors (281835).

12117013 is an equidigital number, since it uses as much as digits as its factorization.

12117013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281834.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 12117013 is about 3480.9500140048. The cubic root of 12117013 is about 229.6845897143.

Adding to 12117013 its reverse (31071121), we get a palindrome (43188134).

The spelling of 12117013 in words is "twelve million, one hundred seventeen thousand, thirteen".