11313221312 has 28 divisors (see below), whose sum is σ = 22493843760. Its totient is φ = 5645481216.

The previous prime is 11313221299. The next prime is 11313221333. The reversal of 11313221312 is 21312231311.

It is a happy 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, 141068 + ... + 206219.

Almost surely, 2^11313221312 is an apocalyptic number.

It is an amenable number.

11313221312 is a deficient number, since it is larger than the sum of its proper divisors (11180622448).

11313221312 is an equidigital number, since it uses as much as digits as its factorization.

11313221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347808 (or 347798 counting only the distinct ones).

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

Adding to 11313221312 its reverse (21312231311), we get a palindrome (32625452623).

Subtracting 11313221312 from its reverse (21312231311), we obtain a palindrome (9999009999).

The spelling of 11313221312 in words is "eleven billion, three hundred thirteen million, two hundred twenty-one thousand, three hundred twelve".