12013213331 has 6 divisors (see below), whose sum is σ = 13974554340. Its totient is φ = 10297039956.

The previous prime is 12013213313. The next prime is 12013213343. The reversal of 12013213331 is 13331231021.

It is not a de Polignac number, because 12013213331 - 2³⁰ = 10939471507 is a prime.

It is a super-3 number, since 3×12013213331³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12013213231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122583761 + ... + 122583858.

It is an arithmetic number, because the mean of its divisors is an integer number (2329092390).

Almost surely, 2^12013213331 is an apocalyptic number.

12013213331 is a deficient number, since it is larger than the sum of its proper divisors (1961341009).

12013213331 is an equidigital number, since it uses as much as digits as its factorization.

12013213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245167633 (or 245167626 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12013213331 its reverse (13331231021), we get a palindrome (25344444352).

The spelling of 12013213331 in words is "twelve billion, thirteen million, two hundred thirteen thousand, three hundred thirty-one".