1312221011313 has 8 divisors (see below), whose sum is σ = 1749884248000. Its totient is φ = 874685891088.

The previous prime is 1312221011293. The next prime is 1312221011317. The reversal of 1312221011313 is 3131101222131.

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

It is not a de Polignac number, because 1312221011313 - 2⁶ = 1312221011249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312221011313.

It is not an unprimeable number, because it can be changed into a prime (1312221011317) 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, 32005213 + ... + 32046186.

It is an arithmetic number, because the mean of its divisors is an integer number (218735531000).

Almost surely, 2^{1312221011313} is an apocalyptic number.

It is an amenable number.

1312221011313 is a deficient number, since it is larger than the sum of its proper divisors (437663236687).

1312221011313 is an equidigital number, since it uses as much as digits as its factorization.

1312221011313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64058231.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1312221011313 its reverse (3131101222131), we get a palindrome (4443322233444).

The spelling of 1312221011313 in words is "one trillion, three hundred twelve billion, two hundred twenty-one million, eleven thousand, three hundred thirteen".