11321230212 has 72 divisors (see below), whose sum is σ = 29013872160. Its totient is φ = 3721645440.

The previous prime is 11321230211. The next prime is 11321230213. The reversal of 11321230212 is 21203212311.

It is an interprime number because it is at equal distance from previous prime (11321230211) and next prime (11321230213).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11321230211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1846512 + ... + 1852632.

Almost surely, 2^11321230212 is an apocalyptic number.

11321230212 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 11321230212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14506936080).

11321230212 is an abundant number, since it is smaller than the sum of its proper divisors (17692641948).

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

11321230212 is a wasteful number, since it uses less digits than its factorization.

11321230212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6833 (or 6828 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11321230212 its reverse (21203212311), we get a palindrome (32524442523).

The spelling of 11321230212 in words is "eleven billion, three hundred twenty-one million, two hundred thirty thousand, two hundred twelve".