11321321133 has 16 divisors (see below), whose sum is σ = 15897159680. Its totient is φ = 7146894384.

The previous prime is 11321321093. The next prime is 11321321159. The reversal of 11321321133 is 33112312311.

It is a happy number.

It is not a de Polignac number, because 11321321133 - 2¹² = 11321317037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321321233) 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, 75810 + ... + 168492.

It is an arithmetic number, because the mean of its divisors is an integer number (993572480).

Almost surely, 2^11321321133 is an apocalyptic number.

It is an amenable number.

11321321133 is a deficient number, since it is larger than the sum of its proper divisors (4575838547).

11321321133 is a wasteful number, since it uses less digits than its factorization.

11321321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94848.

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

Adding to 11321321133 its reverse (33112312311), we get a palindrome (44433633444).

It can be divided in two parts, 1132132 and 1133, that added together give a triangular number (1133265 = T₁₅₀₅).

The spelling of 11321321133 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-one thousand, one hundred thirty-three".