11213321312 has 24 divisors (see below), whose sum is σ = 23374829016. Its totient is φ = 5276856832.

The previous prime is 11213321299. The next prime is 11213321369. The reversal of 11213321312 is 21312331211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10305818 + ... + 10306905.

It is an arithmetic number, because the mean of its divisors is an integer number (973951209).

Almost surely, 2^11213321312 is an apocalyptic number.

It is an amenable number.

11213321312 is an abundant number, since it is smaller than the sum of its proper divisors (12161507704).

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

11213321312 is a wasteful number, since it uses less digits than its factorization.

11213321312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20612750 (or 20612742 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 11213321312 its reverse (21312331211), we get a palindrome (32525652523).

The spelling of 11213321312 in words is "eleven billion, two hundred thirteen million, three hundred twenty-one thousand, three hundred twelve".