121321303013 has 4 divisors (see below), whose sum is σ = 121333056768. Its totient is φ = 121309549260.

The previous prime is 121321303007. The next prime is 121321303067. The reversal of 121321303013 is 310303123121.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310303123121 = 39521 ⋅7851601.

It is a cyclic number.

It is not a de Polignac number, because 121321303013 - 2⁴ = 121321302997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321303073) 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, 5861381 + ... + 5882042.

It is an arithmetic number, because the mean of its divisors is an integer number (30333264192).

Almost surely, 2^121321303013 is an apocalyptic number.

It is an amenable number.

121321303013 is a deficient number, since it is larger than the sum of its proper divisors (11753755).

121321303013 is a wasteful number, since it uses less digits than its factorization.

121321303013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11753754.

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

Adding to 121321303013 its reverse (310303123121), we get a palindrome (431624426134).

The spelling of 121321303013 in words is "one hundred twenty-one billion, three hundred twenty-one million, three hundred three thousand, thirteen".