13212344443340 has 48 divisors (see below), whose sum is σ = 31884818032704. Its totient is φ = 4504919328000.

The previous prime is 13212344443307. The next prime is 13212344443343. The reversal of 13212344443340 is 4334444321231.

It is a junction number, because it is equal to n+sod(n) for n = 13212344443294 and 13212344443303.

It is not an unprimeable number, because it can be changed into a prime (13212344443343) 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, 260676011 + ... + 260726690.

It is an arithmetic number, because the mean of its divisors is an integer number (664267042348).

Almost surely, 2^{13212344443340} is an apocalyptic number.

13212344443340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13212344443340 is an abundant number, since it is smaller than the sum of its proper divisors (18672473589364).

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

13212344443340 is a wasteful number, since it uses less digits than its factorization.

13212344443340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521402898 (or 521402896 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 38.

Adding to 13212344443340 its reverse (4334444321231), we get a palindrome (17546788764571).

The spelling of 13212344443340 in words is "thirteen trillion, two hundred twelve billion, three hundred forty-four million, four hundred forty-three thousand, three hundred forty".