13212212240245 has 4 divisors (see below), whose sum is σ = 15854654688300. Its totient is φ = 10569769792192.

The previous prime is 13212212240243. The next prime is 13212212240273. The reversal of 13212212240245 is 54204221221231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4425831382756 + 8786380857489 = 2103766^2 + 2964183^2 .

It is a cyclic number.

It is not a de Polignac number, because 13212212240245 - 2¹ = 13212212240243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212212240243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321221224020 + ... + 1321221224029.

It is an arithmetic number, because the mean of its divisors is an integer number (3963663672075).

Almost surely, 2^{13212212240245} is an apocalyptic number.

It is an amenable number.

13212212240245 is a deficient number, since it is larger than the sum of its proper divisors (2642442448055).

13212212240245 is an equidigital number, since it uses as much as digits as its factorization.

13212212240245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642442448054.

The product of its (nonzero) digits is 15360, while the sum is 31.

Adding to 13212212240245 its reverse (54204221221231), we get a palindrome (67416433461476).

The spelling of 13212212240245 in words is "thirteen trillion, two hundred twelve billion, two hundred twelve million, two hundred forty thousand, two hundred forty-five".