13204172121 has 8 divisors (see below), whose sum is σ = 20120643264. Its totient is φ = 7545241200.

The previous prime is 13204172083. The next prime is 13204172131. The reversal of 13204172121 is 12127140231.

13204172121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13204172121 - 2⁷ = 13204171993 is a prime.

It is a super-2 number, since 2×13204172121² (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 = 13204172091 and 13204172100.

It is not an unprimeable number, because it can be changed into a prime (13204172131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314385030 + ... + 314385071.

It is an arithmetic number, because the mean of its divisors is an integer number (2515080408).

Almost surely, 2^13204172121 is an apocalyptic number.

It is an amenable number.

13204172121 is a deficient number, since it is larger than the sum of its proper divisors (6916471143).

13204172121 is an equidigital number, since it uses as much as digits as its factorization.

13204172121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628770111.

The product of its (nonzero) digits is 672, while the sum is 24.

The spelling of 13204172121 in words is "thirteen billion, two hundred four million, one hundred seventy-two thousand, one hundred twenty-one".