1321123101313 has 4 divisors (see below), whose sum is σ = 1321133642928. Its totient is φ = 1321112559700.

The previous prime is 1321123101307. The next prime is 1321123101323. The reversal of 1321123101313 is 3131013211231.

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 1321123101313 - 2²⁹ = 1320586230401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321123101323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5080531 + ... + 5334232.

It is an arithmetic number, because the mean of its divisors is an integer number (330283410732).

Almost surely, 2^{1321123101313} is an apocalyptic number.

It is an amenable number.

1321123101313 is a deficient number, since it is larger than the sum of its proper divisors (10541615).

1321123101313 is a wasteful number, since it uses less digits than its factorization.

1321123101313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10541614.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1321123101313 its reverse (3131013211231), we get a palindrome (4452136312544).

The spelling of 1321123101313 in words is "one trillion, three hundred twenty-one billion, one hundred twenty-three million, one hundred one thousand, three hundred thirteen".