11204320212 has 72 divisors (see below), whose sum is σ = 28485966600. Its totient is φ = 3713219328.

The previous prime is 11204320207. The next prime is 11204320213. The reversal of 11204320212 is 21202340211.

It is a happy number.

11204320212 is a `hidden beast` number, since 1 + 1 + 20 + 432 + 0 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1078728336 + 10125591876 = 32844^2 + 100626^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11204320213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6555214 + ... + 6556922.

It is an arithmetic number, because the mean of its divisors is an integer number (395638425).

Almost surely, 2^11204320212 is an apocalyptic number.

11204320212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11204320212 is an abundant number, since it is smaller than the sum of its proper divisors (17281646388).

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

11204320212 is a wasteful number, since it uses less digits than its factorization.

11204320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11204320212 its reverse (21202340211), we get a palindrome (32406660423).

The spelling of 11204320212 in words is "eleven billion, two hundred four million, three hundred twenty thousand, two hundred twelve".