11344220221 has 16 divisors (see below), whose sum is σ = 11729592000. Its totient is φ = 10966209408.

The previous prime is 11344220219. The next prime is 11344220243. The reversal of 11344220221 is 12202244311.

It is a cyclic number.

It is not a de Polignac number, because 11344220221 - 2¹ = 11344220219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11344220192 and 11344220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11344220201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1499370 + ... + 1506916.

It is an arithmetic number, because the mean of its divisors is an integer number (733099500).

Almost surely, 2^11344220221 is an apocalyptic number.

It is an amenable number.

11344220221 is a deficient number, since it is larger than the sum of its proper divisors (385371779).

11344220221 is an equidigital number, since it uses as much as digits as its factorization.

11344220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8028.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 11344220221 its reverse (12202244311), we get a palindrome (23546464532).

The spelling of 11344220221 in words is "eleven billion, three hundred forty-four million, two hundred twenty thousand, two hundred twenty-one".