13451440121 has 16 divisors (see below), whose sum is σ = 15896939904. Its totient is φ = 11143401984.

The previous prime is 13451440081. The next prime is 13451440157. The reversal of 13451440121 is 12104415431.

It is a cyclic number.

It is not a de Polignac number, because 13451440121 - 2²² = 13447245817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13451440181) 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 15 ways as a sum of consecutive naturals, for example, 245720 + ... + 295433.

It is an arithmetic number, because the mean of its divisors is an integer number (993558744).

Almost surely, 2^13451440121 is an apocalyptic number.

It is an amenable number.

13451440121 is a deficient number, since it is larger than the sum of its proper divisors (2445499783).

13451440121 is an equidigital number, since it uses as much as digits as its factorization.

13451440121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541280.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 13451440121 its reverse (12104415431), we get a palindrome (25555855552).

The spelling of 13451440121 in words is "thirteen billion, four hundred fifty-one million, four hundred forty thousand, one hundred twenty-one".