11323213212 has 96 divisors (see below), whose sum is σ = 28475193600. Its totient is φ = 3494848000.

The previous prime is 11323213207. The next prime is 11323213219. The reversal of 11323213212 is 21231232311.

It is a super-2 number, since 2×11323213212² (a number of 21 digits) contains 22 as substring.

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 (11323213219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 835087 + ... + 848537.

It is an arithmetic number, because the mean of its divisors is an integer number (296616600).

Almost surely, 2^11323213212 is an apocalyptic number.

11323213212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11323213212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14237596800).

11323213212 is an abundant number, since it is smaller than the sum of its proper divisors (17151980388).

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

11323213212 is a wasteful number, since it uses less digits than its factorization.

11323213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13587 (or 13585 counting only the distinct ones).

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

Adding to 11323213212 its reverse (21231232311), we get a palindrome (32554445523).

The spelling of 11323213212 in words is "eleven billion, three hundred twenty-three million, two hundred thirteen thousand, two hundred twelve".