11213323221 has 8 divisors (see below), whose sum is σ = 14954351584. Its totient is φ = 7473921840.

The previous prime is 11213323217. The next prime is 11213323241. The reversal of 11213323221 is 12232331211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11213323221 - 2² = 11213323217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213323201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390571 + ... + 418296.

It is an arithmetic number, because the mean of its divisors is an integer number (1869293948).

Almost surely, 2^11213323221 is an apocalyptic number.

It is an amenable number.

11213323221 is a deficient number, since it is larger than the sum of its proper divisors (3741028363).

11213323221 is an equidigital number, since it uses as much as digits as its factorization.

11213323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813491.

The product of its digits is 432, while the sum is 21.

Adding to 11213323221 its reverse (12232331211), we get a palindrome (23445654432).

The spelling of 11213323221 in words is "eleven billion, two hundred thirteen million, three hundred twenty-three thousand, two hundred twenty-one".