13012218 has 16 divisors (see below), whose sum is σ = 28916160. Its totient is φ = 4337388.

The previous prime is 13012217. The next prime is 13012229. The reversal of 13012218 is 81221031.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13012218.

It is not an unprimeable number, because it can be changed into a prime (13012217) 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 7 ways as a sum of consecutive naturals, for example, 120430 + ... + 120537.

It is an arithmetic number, because the mean of its divisors is an integer number (1807260).

Almost surely, 2^13012218 is an apocalyptic number.

13012218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13012218 is an abundant number, since it is smaller than the sum of its proper divisors (15903942).

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

13012218 is a wasteful number, since it uses less digits than its factorization.

13012218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240978 (or 240972 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 13012218 is about 3607.2452092975. The cubic root of 13012218 is about 235.2071088022.

Adding to 13012218 its reverse (81221031), we get a palindrome (94233249).

The spelling of 13012218 in words is "thirteen million, twelve thousand, two hundred eighteen".