13122548278221 has 8 divisors (see below), whose sum is σ = 17500003310944. Its totient is φ = 8746729382160.

The previous prime is 13122548278193. The next prime is 13122548278237. The reversal of 13122548278221 is 12287284522131.

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

It is not a de Polignac number, because 13122548278221 - 2²⁵ = 13122514723789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122548278241) 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, 409015450 + ... + 409047531.

It is an arithmetic number, because the mean of its divisors is an integer number (2187500413868).

Almost surely, 2^{13122548278221} is an apocalyptic number.

It is an amenable number.

13122548278221 is a deficient number, since it is larger than the sum of its proper divisors (4377455032723).

13122548278221 is an equidigital number, since it uses as much as digits as its factorization.

13122548278221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818068331.

The product of its digits is 860160, while the sum is 48.

The spelling of 13122548278221 in words is "thirteen trillion, one hundred twenty-two billion, five hundred forty-eight million, two hundred seventy-eight thousand, two hundred twenty-one".