13220116 has 24 divisors (see below), whose sum is σ = 28474880. Its totient is φ = 5229792.

The previous prime is 13220099. The next prime is 13220117. The reversal of 13220116 is 61102231.

It is a self number, because there is not a number n which added to its sum of digits gives 13220116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17796 + ... + 18523.

Almost surely, 2^13220116 is an apocalyptic number.

It is an amenable number.

13220116 is an abundant number, since it is smaller than the sum of its proper divisors (15254764).

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

13220116 is a wasteful number, since it uses less digits than its factorization.

13220116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36343 (or 36341 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 13220116 is about 3635.9477443990. The cubic root of 13220116 is about 236.4531416267.

Adding to 13220116 its reverse (61102231), we get a palindrome (74322347).

The spelling of 13220116 in words is "thirteen million, two hundred twenty thousand, one hundred sixteen".