13125121 has 8 divisors (see below), whose sum is σ = 13915904. Its totient is φ = 12357360.

The previous prime is 13125113. The next prime is 13125127. The reversal of 13125121 is 12152131.

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 13125121 - 2³ = 13125113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13125095 and 13125104.

It is not an unprimeable number, because it can be changed into a prime (13125127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4575 + ... + 6868.

It is an arithmetic number, because the mean of its divisors is an integer number (1739488).

Almost surely, 2^13125121 is an apocalyptic number.

It is an amenable number.

13125121 is a deficient number, since it is larger than the sum of its proper divisors (790783).

13125121 is a wasteful number, since it uses less digits than its factorization.

13125121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511.

The product of its digits is 60, while the sum is 16.

The square root of 13125121 is about 3622.8608860954. The cubic root of 13125121 is about 235.8854238910.

Adding to 13125121 its reverse (12152131), we get a palindrome (25277252).

It can be divided in two parts, 131 and 25121, that added together give a palindrome (25252).

The spelling of 13125121 in words is "thirteen million, one hundred twenty-five thousand, one hundred twenty-one".