11223213312 has 36 divisors (see below), whose sum is σ = 29870116640. Its totient is φ = 3741070848.

The previous prime is 11223213311. The next prime is 11223213319. The reversal of 11223213312 is 21331232211.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223213311) 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, 7306012 + ... + 7307547.

Almost surely, 2^11223213312 is an apocalyptic number.

11223213312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11223213312 is an abundant number, since it is smaller than the sum of its proper divisors (18646903328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11223213312 is an equidigital number, since it uses as much as digits as its factorization.

11223213312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14613578 (or 14613564 counting only the distinct ones).

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

Adding to 11223213312 its reverse (21331232211), we get a palindrome (32554445523).

The spelling of 11223213312 in words is "eleven billion, two hundred twenty-three million, two hundred thirteen thousand, three hundred twelve".