13313331331212 has 96 divisors (see below), whose sum is σ = 34174067961600. Its totient is φ = 4000436542720.

The previous prime is 13313331331187. The next prime is 13313331331219. The reversal of 13313331331212 is 21213313331331.

It is a super-2 number, since 2×13313331331212² (a number of 27 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13313331331212.

It is not an unprimeable number, because it can be changed into a prime (13313331331219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10968538 + ... + 12121694.

It is an arithmetic number, because the mean of its divisors is an integer number (355979874600).

Almost surely, 2^{13313331331212} is an apocalyptic number.

13313331331212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13313331331212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17087033980800).

13313331331212 is an abundant number, since it is smaller than the sum of its proper divisors (20860736630388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13313331331212 is a wasteful number, since it uses less digits than its factorization.

13313331331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153911 (or 1153909 counting only the distinct ones).

The product of its digits is 8748, while the sum is 30.

Adding to 13313331331212 its reverse (21213313331331), we get a palindrome (34526644662543).

The spelling of 13313331331212 in words is "thirteen trillion, three hundred thirteen billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred twelve".