13216122 has 40 divisors (see below), whose sum is σ = 30910176. Its totient is φ = 4212648.

The previous prime is 13216097. The next prime is 13216127. The reversal of 13216122 is 22161231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13216095 and 13216104.

It is not an unprimeable number, because it can be changed into a prime (13216127) 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 19 ways as a sum of consecutive naturals, for example, 1953 + ... + 5499.

Almost surely, 2^13216122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13216122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15455088).

13216122 is an abundant number, since it is smaller than the sum of its proper divisors (17694054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13216122 is a wasteful number, since it uses less digits than its factorization.

13216122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3584 (or 3575 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 13216122 is about 3635.3984650929. The cubic root of 13216122 is about 236.4293271869.

Adding to 13216122 its reverse (22161231), we get a palindrome (35377353).

It can be divided in two parts, 1 and 3216122, that added together give a palindrome (3216123).

The spelling of 13216122 in words is "thirteen million, two hundred sixteen thousand, one hundred twenty-two".