11304113221 has 4 divisors (see below), whose sum is σ = 11344922572. Its totient is φ = 11263303872.

The previous prime is 11304113189. The next prime is 11304113243. The reversal of 11304113221 is 12231140311.

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 6066696321 + 5237416900 = 77889^2 + 72370^2 .

It is a cyclic number.

It is not a de Polignac number, because 11304113221 - 2⁵ = 11304113189 is a prime.

It is a super-3 number, since 3×11304113221³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11304113921) 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, 20404260 + ... + 20404813.

It is an arithmetic number, because the mean of its divisors is an integer number (2836230643).

Almost surely, 2^11304113221 is an apocalyptic number.

It is an amenable number.

11304113221 is a deficient number, since it is larger than the sum of its proper divisors (40809351).

11304113221 is an equidigital number, since it uses as much as digits as its factorization.

11304113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40809350.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11304113221 its reverse (12231140311), we get a palindrome (23535253532).

The spelling of 11304113221 in words is "eleven billion, three hundred four million, one hundred thirteen thousand, two hundred twenty-one".