11321331999 has 16 divisors (see below), whose sum is σ = 15205038720. Its totient is φ = 7492782240.

The previous prime is 11321331971. The next prime is 11321332007. The reversal of 11321331999 is 99913312311.

It is not a de Polignac number, because 11321331999 - 2¹³ = 11321323807 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11321331999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11321331919) 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, 214644 + ... + 262134.

It is an arithmetic number, because the mean of its divisors is an integer number (950314920).

Almost surely, 2^11321331999 is an apocalyptic number.

11321331999 is a deficient number, since it is larger than the sum of its proper divisors (3883706721).

11321331999 is a wasteful number, since it uses less digits than its factorization.

11321331999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48070.

The product of its digits is 39366, while the sum is 42.

The spelling of 11321331999 in words is "eleven billion, three hundred twenty-one million, three hundred thirty-one thousand, nine hundred ninety-nine".