11324441221 has 4 divisors (see below), whose sum is σ = 11324664000. Its totient is φ = 11324218444.

The previous prime is 11324441147. The next prime is 11324441287. The reversal of 11324441221 is 12214442311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12214442311 = 23339 ⋅523349.

It is a cyclic number.

It is not a de Polignac number, because 11324441221 - 2¹⁵ = 11324408453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11324441291) 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, 6330 + ... + 150628.

It is an arithmetic number, because the mean of its divisors is an integer number (2831166000).

Almost surely, 2^11324441221 is an apocalyptic number.

It is an amenable number.

11324441221 is a deficient number, since it is larger than the sum of its proper divisors (222779).

11324441221 is an equidigital number, since it uses as much as digits as its factorization.

11324441221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222778.

The product of its digits is 1536, while the sum is 25.

Adding to 11324441221 its reverse (12214442311), we get a palindrome (23538883532).

The spelling of 11324441221 in words is "eleven billion, three hundred twenty-four million, four hundred forty-one thousand, two hundred twenty-one".