11321113121 has 8 divisors (see below), whose sum is σ = 12010798080. Its totient is φ = 10640811888.

The previous prime is 11321113043. The next prime is 11321113171. The reversal of 11321113121 is 12131112311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11321113121 - 2¹⁰ = 11321112097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11321113121.

It is not an unprimeable number, because it can be changed into a prime (11321113171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2343446 + ... + 2348271.

It is an arithmetic number, because the mean of its divisors is an integer number (1501349760).

Almost surely, 2^11321113121 is an apocalyptic number.

It is an amenable number.

11321113121 is a deficient number, since it is larger than the sum of its proper divisors (689684959).

11321113121 is a wasteful number, since it uses less digits than its factorization.

11321113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691863.

The product of its digits is 36, while the sum is 17.

Adding to 11321113121 its reverse (12131112311), we get a palindrome (23452225432).

The spelling of 11321113121 in words is "eleven billion, three hundred twenty-one million, one hundred thirteen thousand, one hundred twenty-one".