13420134343121 has 16 divisors (see below), whose sum is σ = 14665510556928. Its totient is φ = 12179003120400.

The previous prime is 13420134343117. The next prime is 13420134343123. The reversal of 13420134343121 is 12134343102431.

It is a cyclic number.

It is not a de Polignac number, because 13420134343121 - 2² = 13420134343117 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13420134343123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14801546 + ... + 15682028.

It is an arithmetic number, because the mean of its divisors is an integer number (916594409808).

Almost surely, 2^{13420134343121} is an apocalyptic number.

13420134343121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13420134343121 is a deficient number, since it is larger than the sum of its proper divisors (1245376213807).

13420134343121 is a wasteful number, since it uses less digits than its factorization.

13420134343121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882892.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 13420134343121 its reverse (12134343102431), we get a palindrome (25554477445552).

The spelling of 13420134343121 in words is "thirteen trillion, four hundred twenty billion, one hundred thirty-four million, three hundred forty-three thousand, one hundred twenty-one".