11321333121 has 16 divisors (see below), whose sum is σ = 17253423104. Its totient is φ = 6468632784.

The previous prime is 11321333119. The next prime is 11321333143. The reversal of 11321333121 is 12133312311.

It is a happy number.

It is not a de Polignac number, because 11321333121 - 2¹ = 11321333119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11321331121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218130 + ... + 264996.

It is an arithmetic number, because the mean of its divisors is an integer number (1078338944).

Almost surely, 2^11321333121 is an apocalyptic number.

It is an amenable number.

11321333121 is a deficient number, since it is larger than the sum of its proper divisors (5932089983).

11321333121 is a wasteful number, since it uses less digits than its factorization.

11321333121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58380.

The product of its digits is 324, while the sum is 21.

Adding to 11321333121 its reverse (12133312311), we get a palindrome (23454645432).

The spelling of 11321333121 in words is "eleven billion, three hundred twenty-one million, three hundred thirty-three thousand, one hundred twenty-one".