11210681 has 4 divisors (see below), whose sum is σ = 11219700. Its totient is φ = 11201664.

The previous prime is 11210677. The next prime is 11210699. The reversal of 11210681 is 18601211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3031081 + 8179600 = 1741^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 11210681 - 2² = 11210677 is a prime.

It is a super-2 number, since 2×11210681² = 251358736967522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11210081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (2804925).

Almost surely, 2^11210681 is an apocalyptic number.

It is an amenable number.

11210681 is a deficient number, since it is larger than the sum of its proper divisors (9019).

11210681 is an equidigital number, since it uses as much as digits as its factorization.

11210681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 11210681 is about 3348.2355054566. The cubic root of 11210681 is about 223.8088891321.

Adding to 11210681 its reverse (18601211), we get a palindrome (29811892).

The spelling of 11210681 in words is "eleven million, two hundred ten thousand, six hundred eighty-one".