13401344121 has 16 divisors (see below), whose sum is σ = 19496790720. Its totient is φ = 8120390720.

The previous prime is 13401344057. The next prime is 13401344191. The reversal of 13401344121 is 12144310431.

It is a cyclic number.

It is not a de Polignac number, because 13401344121 - 2⁶ = 13401344057 is a prime.

It is a super-2 number, since 2×13401344121² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13401344091 and 13401344100.

It is not an unprimeable number, because it can be changed into a prime (13401344191) 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, 136951 + ... + 213443.

It is an arithmetic number, because the mean of its divisors is an integer number (1218549420).

Almost surely, 2^13401344121 is an apocalyptic number.

13401344121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13401344121 is a deficient number, since it is larger than the sum of its proper divisors (6095446599).

13401344121 is a wasteful number, since it uses less digits than its factorization.

13401344121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81816.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 13401344121 its reverse (12144310431), we get a palindrome (25545654552).

The spelling of 13401344121 in words is "thirteen billion, four hundred one million, three hundred forty-four thousand, one hundred twenty-one".