11140221 has 4 divisors (see below), whose sum is σ = 14853632. Its totient is φ = 7426812.

The previous prime is 11140193. The next prime is 11140231. The reversal of 11140221 is 12204111.

It is a happy number.

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 not a de Polignac number, because 11140221 - 2⁵ = 11140189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11140197 and 11140206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11140231) 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, 1856701 + ... + 1856706.

It is an arithmetic number, because the mean of its divisors is an integer number (3713408).

Almost surely, 2^11140221 is an apocalyptic number.

It is an amenable number.

11140221 is a deficient number, since it is larger than the sum of its proper divisors (3713411).

11140221 is an equidigital number, since it uses as much as digits as its factorization.

11140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713410.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 11140221 is about 3337.6969604804. The cubic root of 11140221 is about 223.3390179489.

Adding to 11140221 its reverse (12204111), we get a palindrome (23344332).

The spelling of 11140221 in words is "eleven million, one hundred forty thousand, two hundred twenty-one".