121320103313 has 4 divisors (see below), whose sum is σ = 121330543908. Its totient is φ = 121309662720.

The previous prime is 121320103301. The next prime is 121320103393. The reversal of 121320103313 is 313301023121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32449338769 + 88870764544 = 180137^2 + 298112^2 .

It is a cyclic number.

It is not a de Polignac number, because 121320103313 - 2⁶ = 121320103249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121320103393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5202848 + ... + 5226113.

It is an arithmetic number, because the mean of its divisors is an integer number (30332635977).

Almost surely, 2^121320103313 is an apocalyptic number.

It is an amenable number.

121320103313 is a deficient number, since it is larger than the sum of its proper divisors (10440595).

121320103313 is a wasteful number, since it uses less digits than its factorization.

121320103313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440594.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 121320103313 its reverse (313301023121), we get a palindrome (434621126434).

The spelling of 121320103313 in words is "one hundred twenty-one billion, three hundred twenty million, one hundred three thousand, three hundred thirteen".