13109212 has 24 divisors (see below), whose sum is σ = 23451120. Its totient is φ = 6410880.

The previous prime is 13109203. The next prime is 13109237. The reversal of 13109212 is 21290131.

It is a self number, because there is not a number n which added to its sum of digits gives 13109212.

It is a congruent number.

It is an unprimeable number.

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, 46512 + ... + 46792.

It is an arithmetic number, because the mean of its divisors is an integer number (977130).

Almost surely, 2^13109212 is an apocalyptic number.

It is an amenable number.

13109212 is a deficient number, since it is larger than the sum of its proper divisors (10341908).

13109212 is a wasteful number, since it uses less digits than its factorization.

13109212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 13109212 is about 3620.6645798803. The cubic root of 13109212 is about 235.7900795395.

Adding to 13109212 its reverse (21290131), we get a palindrome (34399343).

The spelling of 13109212 in words is "thirteen million, one hundred nine thousand, two hundred twelve".