13132121 has 4 divisors (see below), whose sum is σ = 13262244. Its totient is φ = 13002000.

The previous prime is 13132117. The next prime is 13132123. The reversal of 13132121 is 12123131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6056521 + 7075600 = 2461^2 + 2660^2 .

It is a cyclic number.

It is not a de Polignac number, because 13132121 - 2² = 13132117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13132096 and 13132105.

It is not an unprimeable number, because it can be changed into a prime (13132123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64910 + ... + 65111.

It is an arithmetic number, because the mean of its divisors is an integer number (3315561).

Almost surely, 2^13132121 is an apocalyptic number.

It is an amenable number.

13132121 is a deficient number, since it is larger than the sum of its proper divisors (130123).

13132121 is a wasteful number, since it uses less digits than its factorization.

13132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130122.

The product of its digits is 36, while the sum is 14.

The square root of 13132121 is about 3623.8268446492. The cubic root of 13132121 is about 235.9273512381.

Adding to 13132121 its reverse (12123131), we get a palindrome (25255252).

The spelling of 13132121 in words is "thirteen million, one hundred thirty-two thousand, one hundred twenty-one".