13404131121 has 8 divisors (see below), whose sum is σ = 17900059104. Its totient is φ = 8922145280.

The previous prime is 13404131099. The next prime is 13404131129. The reversal of 13404131121 is 12113140431.

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

It is a cyclic number.

It is not a de Polignac number, because 13404131121 - 2⁵ = 13404131089 is a prime.

It is a super-2 number, since 2×13404131121² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13404131129) 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, 3483291 + ... + 3487136.

It is an arithmetic number, because the mean of its divisors is an integer number (2237507388).

Almost surely, 2^13404131121 is an apocalyptic number.

It is an amenable number.

13404131121 is a deficient number, since it is larger than the sum of its proper divisors (4495927983).

13404131121 is an equidigital number, since it uses as much as digits as its factorization.

13404131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6971071.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 13404131121 its reverse (12113140431), we get a palindrome (25517271552).

The spelling of 13404131121 in words is "thirteen billion, four hundred four million, one hundred thirty-one thousand, one hundred twenty-one".