11691212 has 12 divisors (see below), whose sum is σ = 22033536. Its totient is φ = 5395920.

The previous prime is 11691209. The next prime is 11691259. The reversal of 11691212 is 21219611.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 112364 + ... + 112467.

It is an arithmetic number, because the mean of its divisors is an integer number (1836128).

Almost surely, 2^11691212 is an apocalyptic number.

It is an amenable number.

11691212 is a deficient number, since it is larger than the sum of its proper divisors (10342324).

11691212 is a wasteful number, since it uses less digits than its factorization.

11691212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224848 (or 224846 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 11691212 is about 3419.2414363423. The cubic root of 11691212 is about 226.9620150302.

The spelling of 11691212 in words is "eleven million, six hundred ninety-one thousand, two hundred twelve".