12711321 has 12 divisors (see below), whose sum is σ = 20983872. Its totient is φ = 7263576.

The previous prime is 12711287. The next prime is 12711329. The reversal of 12711321 is 12311721.

It is a happy number.

It is not a de Polignac number, because 12711321 - 2⁹ = 12710809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12711294 and 12711303.

It is not an unprimeable number, because it can be changed into a prime (12711329) 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 11 ways as a sum of consecutive naturals, for example, 100821 + ... + 100946.

It is an arithmetic number, because the mean of its divisors is an integer number (1748656).

Almost surely, 2^12711321 is an apocalyptic number.

It is an amenable number.

12711321 is a deficient number, since it is larger than the sum of its proper divisors (8272551).

12711321 is a wasteful number, since it uses less digits than its factorization.

12711321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201780 (or 201777 counting only the distinct ones).

The product of its digits is 84, while the sum is 18.

The square root of 12711321 is about 3565.2939570251. The cubic root of 12711321 is about 233.3799605231.

The spelling of 12711321 in words is "twelve million, seven hundred eleven thousand, three hundred twenty-one".