13387133121 has 4 divisors (see below), whose sum is σ = 17849510832. Its totient is φ = 8924755412.

The previous prime is 13387133117. The next prime is 13387133143. The reversal of 13387133121 is 12133178331.

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 13387133121 - 2² = 13387133117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13387133821) 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, 2231188851 + ... + 2231188856.

It is an arithmetic number, because the mean of its divisors is an integer number (4462377708).

Almost surely, 2^13387133121 is an apocalyptic number.

It is an amenable number.

13387133121 is a deficient number, since it is larger than the sum of its proper divisors (4462377711).

13387133121 is an equidigital number, since it uses as much as digits as its factorization.

13387133121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462377710.

The product of its digits is 9072, while the sum is 33.

The spelling of 13387133121 in words is "thirteen billion, three hundred eighty-seven million, one hundred thirty-three thousand, one hundred twenty-one".