13216215 has 16 divisors (see below), whose sum is σ = 21718368. Its totient is φ = 6857856.

The previous prime is 13216201. The next prime is 13216223. The reversal of 13216215 is 51261231.

13216215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13216215 - 2⁷ = 13216087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13216191 and 13216200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11352 + ... + 12461.

It is an arithmetic number, because the mean of its divisors is an integer number (1357398).

Almost surely, 2^13216215 is an apocalyptic number.

13216215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13216215 is a deficient number, since it is larger than the sum of its proper divisors (8502153).

13216215 is a wasteful number, since it uses less digits than its factorization.

13216215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23858.

The product of its digits is 360, while the sum is 21.

The square root of 13216215 is about 3635.4112559654. The cubic root of 13216215 is about 236.4298817590.

Adding to 13216215 its reverse (51261231), we get a palindrome (64477446).

It can be divided in two parts, 13216 and 215, that added together give a palindrome (13431).

The spelling of 13216215 in words is "thirteen million, two hundred sixteen thousand, two hundred fifteen".