11681211 has 8 divisors (see below), whose sum is σ = 15591424. Its totient is φ = 7779240.

The previous prime is 11681191. The next prime is 11681213. The reversal of 11681211 is 11218611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11681211 - 2¹⁰ = 11680187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11681213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3090 + ... + 5736.

It is an arithmetic number, because the mean of its divisors is an integer number (1948928).

Almost surely, 2^11681211 is an apocalyptic number.

11681211 is a deficient number, since it is larger than the sum of its proper divisors (3910213).

11681211 is a wasteful number, since it uses less digits than its factorization.

11681211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121.

The product of its digits is 96, while the sum is 21.

The square root of 11681211 is about 3417.7786645715. The cubic root of 11681211 is about 226.8972799496.

Adding to 11681211 its reverse (11218611), we get a palindrome (22899822).

The spelling of 11681211 in words is "eleven million, six hundred eighty-one thousand, two hundred eleven".