11013113221 has 4 divisors (see below), whose sum is σ = 12014305344. Its totient is φ = 10011921100.

The previous prime is 11013113219. The next prime is 11013113257. The reversal of 11013113221 is 12231131011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11013113221 - 2¹ = 11013113219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11013113195 and 11013113204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013113201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500596045 + ... + 500596066.

It is an arithmetic number, because the mean of its divisors is an integer number (3003576336).

Almost surely, 2^11013113221 is an apocalyptic number.

11013113221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11013113221 is a deficient number, since it is larger than the sum of its proper divisors (1001192123).

11013113221 is a wasteful number, since it uses less digits than its factorization.

11013113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001192122.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 11013113221 its reverse (12231131011), we get a palindrome (23244244232).

The spelling of 11013113221 in words is "eleven billion, thirteen million, one hundred thirteen thousand, two hundred twenty-one".