1313312221033 has 4 divisors (see below), whose sum is σ = 1319201513728. Its totient is φ = 1307422928340.

The previous prime is 1313312220973. The next prime is 1313312221049. The reversal of 1313312221033 is 3301222133131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1313312221033 - 2³⁷ = 1175873267561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1313312220989 and 1313312221007.

It is not an unprimeable number, because it can be changed into a prime (1313315221033) 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 3 ways as a sum of consecutive naturals, for example, 2944646013 + ... + 2944646458.

It is an arithmetic number, because the mean of its divisors is an integer number (329800378432).

Almost surely, 2^{1313312221033} is an apocalyptic number.

It is an amenable number.

1313312221033 is a deficient number, since it is larger than the sum of its proper divisors (5889292695).

1313312221033 is an equidigital number, since it uses as much as digits as its factorization.

1313312221033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5889292694.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1313312221033 its reverse (3301222133131), we get a palindrome (4614534354164).

The spelling of 1313312221033 in words is "one trillion, three hundred thirteen billion, three hundred twelve million, two hundred twenty-one thousand, thirty-three".