13091212 has 12 divisors (see below), whose sum is σ = 23342256. Its totient is φ = 6422000.

The previous prime is 13091203. The next prime is 13091219. The reversal of 13091212 is 21219031.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13091212.

It is not an unprimeable number, because it can be changed into a prime (13091219) 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 3 ways as a sum of consecutive naturals, for example, 30664 + ... + 31087.

It is an arithmetic number, because the mean of its divisors is an integer number (1945188).

Almost surely, 2^13091212 is an apocalyptic number.

It is an amenable number.

13091212 is a deficient number, since it is larger than the sum of its proper divisors (10251044).

13091212 is a wasteful number, since it uses less digits than its factorization.

13091212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61808 (or 61806 counting only the distinct ones).

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

The square root of 13091212 is about 3618.1779945160. The cubic root of 13091212 is about 235.6821105411.

The spelling of 13091212 in words is "thirteen million, ninety-one thousand, two hundred twelve".