11181201 has 4 divisors (see below), whose sum is σ = 14908272. Its totient is φ = 7454132.

The previous prime is 11181133. The next prime is 11181241. The reversal of 11181201 is 10218111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11181201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11181241) 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, 1863531 + ... + 1863536.

It is an arithmetic number, because the mean of its divisors is an integer number (3727068).

Almost surely, 2^11181201 is an apocalyptic number.

It is an amenable number.

11181201 is a deficient number, since it is larger than the sum of its proper divisors (3727071).

11181201 is an equidigital number, since it uses as much as digits as its factorization.

11181201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727070.

The product of its (nonzero) digits is 16, while the sum is 15.

The square root of 11181201 is about 3343.8302887557. The cubic root of 11181201 is about 223.6125383526.

Adding to 11181201 its reverse (10218111), we get a palindrome (21399312).

The spelling of 11181201 in words is "eleven million, one hundred eighty-one thousand, two hundred one".