13391813121 has 8 divisors (see below), whose sum is σ = 18906089184. Its totient is φ = 8402706240.

The previous prime is 13391813077. The next prime is 13391813129. The reversal of 13391813121 is 12131819331.

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

It is not a de Polignac number, because 13391813121 - 2¹⁰ = 13391812097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13391813129) 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, 131292235 + ... + 131292336.

It is an arithmetic number, because the mean of its divisors is an integer number (2363261148).

Almost surely, 2^13391813121 is an apocalyptic number.

It is an amenable number.

13391813121 is a deficient number, since it is larger than the sum of its proper divisors (5514276063).

13391813121 is a wasteful number, since it uses less digits than its factorization.

13391813121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262584591.

The product of its digits is 3888, while the sum is 33.

The spelling of 13391813121 in words is "thirteen billion, three hundred ninety-one million, eight hundred thirteen thousand, one hundred twenty-one".