11044011221 has 4 divisors (see below), whose sum is σ = 11048855244. Its totient is φ = 11039167200.

The previous prime is 11044011191. The next prime is 11044011227. The reversal of 11044011221 is 12211044011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9275808721 + 1768202500 = 96311^2 + 42050^2 .

It is a cyclic number.

It is not a de Polignac number, because 11044011221 - 2²² = 11039816917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11044011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11044011227) 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, 2418590 + ... + 2423151.

It is an arithmetic number, because the mean of its divisors is an integer number (2762213811).

Almost surely, 2^11044011221 is an apocalyptic number.

It is an amenable number.

11044011221 is a deficient number, since it is larger than the sum of its proper divisors (4844023).

11044011221 is an equidigital number, since it uses as much as digits as its factorization.

11044011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844022.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11044011221 its reverse (12211044011), we get a palindrome (23255055232).

The spelling of 11044011221 in words is "eleven billion, forty-four million, eleven thousand, two hundred twenty-one".