1313565352221 has 32 divisors (see below), whose sum is σ = 1810886077440. Its totient is φ = 846420793344.

The previous prime is 1313565352157. The next prime is 1313565352271. The reversal of 1313565352221 is 1222535653131.

It is not a de Polignac number, because 1313565352221 - 2⁶ = 1313565352157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1313565352221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313565352271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12633181 + ... + 12736733.

It is an arithmetic number, because the mean of its divisors is an integer number (56590189920).

Almost surely, 2^{1313565352221} is an apocalyptic number.

It is an amenable number.

1313565352221 is a deficient number, since it is larger than the sum of its proper divisors (497320725219).

1313565352221 is a wasteful number, since it uses less digits than its factorization.

1313565352221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104625.

The product of its digits is 162000, while the sum is 39.

The spelling of 1313565352221 in words is "one trillion, three hundred thirteen billion, five hundred sixty-five million, three hundred fifty-two thousand, two hundred twenty-one".