11321213331 has 8 divisors (see below), whose sum is σ = 15118875904. Its totient is φ = 7535513160.

The previous prime is 11321213317. The next prime is 11321213357. The reversal of 11321213331 is 13331212311.

It is a happy number.

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

It is not a de Polignac number, because 11321213331 - 2¹⁴ = 11321196947 is a prime.

It is a super-2 number, since 2×11321213331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11321213298 and 11321213307.

It is not an unprimeable number, because it can be changed into a prime (11321213381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2988391 + ... + 2992176.

It is an arithmetic number, because the mean of its divisors is an integer number (1889859488).

Almost surely, 2^11321213331 is an apocalyptic number.

11321213331 is a deficient number, since it is larger than the sum of its proper divisors (3797662573).

11321213331 is an equidigital number, since it uses as much as digits as its factorization.

11321213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981201.

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

Adding to 11321213331 its reverse (13331212311), we get a palindrome (24652425642).

The spelling of 11321213331 in words is "eleven billion, three hundred twenty-one million, two hundred thirteen thousand, three hundred thirty-one".