13221245655435 has 8 divisors (see below), whose sum is σ = 21153993048720. Its totient is φ = 7051331016224.

The previous prime is 13221245655403. The next prime is 13221245655437. The reversal of 13221245655435 is 53455654212231.

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

It is a cyclic number.

It is not a de Polignac number, because 13221245655435 - 2⁵ = 13221245655403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13221245655437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440708188500 + ... + 440708188529.

It is an arithmetic number, because the mean of its divisors is an integer number (2644249131090).

Almost surely, 2^{13221245655435} is an apocalyptic number.

13221245655435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13221245655435 is a deficient number, since it is larger than the sum of its proper divisors (7932747393285).

13221245655435 is an equidigital number, since it uses as much as digits as its factorization.

13221245655435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881416377037.

The product of its digits is 4320000, while the sum is 48.

Adding to 13221245655435 its reverse (53455654212231), we get a palindrome (66676899867666).

The spelling of 13221245655435 in words is "thirteen trillion, two hundred twenty-one billion, two hundred forty-five million, six hundred fifty-five thousand, four hundred thirty-five".