11190221 has 8 divisors (see below), whose sum is σ = 13462080. Its totient is φ = 9086688.

The previous prime is 11190217. The next prime is 11190251. The reversal of 11190221 is 12209111.

11190221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11190221 - 2² = 11190217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11190221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11190251) 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, 41936 + ... + 42201.

It is an arithmetic number, because the mean of its divisors is an integer number (1682760).

Almost surely, 2^11190221 is an apocalyptic number.

It is an amenable number.

11190221 is a deficient number, since it is larger than the sum of its proper divisors (2271859).

11190221 is an equidigital number, since it uses as much as digits as its factorization.

11190221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84163.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11190221 is about 3345.1787695129. The cubic root of 11190221 is about 223.6726524365.

Adding to 11190221 its reverse (12209111), we get a palindrome (23399332).

It can be divided in two parts, 11190 and 221, that added together give a palindrome (11411).

The spelling of 11190221 in words is "eleven million, one hundred ninety thousand, two hundred twenty-one".