13002218 has 4 divisors (see below), whose sum is σ = 19503330. Its totient is φ = 6501108.

The previous prime is 13002203. The next prime is 13002233. The reversal of 13002218 is 81220031.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (13002203) and next prime (13002233).

It can be written as a sum of positive squares in only one way, i.e., 8392609 + 4609609 = 2897^2 + 2147^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13002196 and 13002205.

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 as a sum of consecutive naturals, namely, 3250553 + ... + 3250556.

Almost surely, 2^13002218 is an apocalyptic number.

13002218 is a deficient number, since it is larger than the sum of its proper divisors (6501112).

13002218 is an equidigital number, since it uses as much as digits as its factorization.

13002218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501111.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 13002218 is about 3605.8588436044. The cubic root of 13002218 is about 235.1468404740.

Adding to 13002218 its reverse (81220031), we get a palindrome (94222249).

The spelling of 13002218 in words is "thirteen million, two thousand, two hundred eighteen".