11313221243 has 12 divisors (see below), whose sum is σ = 12000677040. Its totient is φ = 10663316496.

The previous prime is 11313221237. The next prime is 11313221273. The reversal of 11313221243 is 34212231311.

It is not a de Polignac number, because 11313221243 - 2⁸ = 11313220987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11313221203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8423 + ... + 150656.

It is an arithmetic number, because the mean of its divisors is an integer number (1000056420).

Almost surely, 2^11313221243 is an apocalyptic number.

11313221243 is a deficient number, since it is larger than the sum of its proper divisors (687455797).

11313221243 is a wasteful number, since it uses less digits than its factorization.

11313221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159314 (or 159295 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 11313221243 its reverse (34212231311), we get a palindrome (45525452554).

The spelling of 11313221243 in words is "eleven billion, three hundred thirteen million, two hundred twenty-one thousand, two hundred forty-three".