13211197 has 4 divisors (see below), whose sum is σ = 13427836. Its totient is φ = 12994560.

The previous prime is 13211179. The next prime is 13211201. The reversal of 13211197 is 79111231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79111231 = 19 ⋅4163749.

It can be written as a sum of positive squares in 2 ways, for example, as 1610361 + 11600836 = 1269^2 + 3406^2 .

It is a cyclic number.

It is not a de Polignac number, because 13211197 - 2⁷ = 13211069 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 (13211167) 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 3 ways as a sum of consecutive naturals, for example, 108228 + ... + 108349.

It is an arithmetic number, because the mean of its divisors is an integer number (3356959).

Almost surely, 2^13211197 is an apocalyptic number.

It is an amenable number.

13211197 is a deficient number, since it is larger than the sum of its proper divisors (216639).

13211197 is an equidigital number, since it uses as much as digits as its factorization.

13211197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216638.

The product of its digits is 378, while the sum is 25.

The square root of 13211197 is about 3634.7210346875. The cubic root of 13211197 is about 236.3999550028.

The spelling of 13211197 in words is "thirteen million, two hundred eleven thousand, one hundred ninety-seven".