13212215 has 8 divisors (see below), whose sum is σ = 15881280. Its totient is φ = 10552032.

The previous prime is 13212181. The next prime is 13212229. The reversal of 13212215 is 51221231.

It is a happy number.

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 13212215 - 2⁶ = 13212151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13212193 and 13212202.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1682 + ... + 5408.

It is an arithmetic number, because the mean of its divisors is an integer number (1985160).

Almost surely, 2^13212215 is an apocalyptic number.

13212215 is a deficient number, since it is larger than the sum of its proper divisors (2669065).

13212215 is an equidigital number, since it uses as much as digits as its factorization.

13212215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4441.

The product of its digits is 120, while the sum is 17.

The square root of 13212215 is about 3634.8610702474. The cubic root of 13212215 is about 236.4060268466.

Adding to 13212215 its reverse (51221231), we get a palindrome (64433446).

The spelling of 13212215 in words is "thirteen million, two hundred twelve thousand, two hundred fifteen".