13253121 has 24 divisors (see below), whose sum is σ = 22003904. Its totient is φ = 7529760.

The previous prime is 13253101. The next prime is 13253131. The reversal of 13253121 is 12135231.

13253121 is a `hidden beast` number, since 132 + 531 + 2 + 1 = 666.

It is not a de Polignac number, because 13253121 - 2⁶ = 13253057 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 = 13253094 and 13253103.

It is not an unprimeable number, because it can be changed into a prime (13253101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12795 + ... + 13791.

Almost surely, 2^13253121 is an apocalyptic number.

It is an amenable number.

13253121 is a deficient number, since it is larger than the sum of its proper divisors (8750783).

13253121 is a wasteful number, since it uses less digits than its factorization.

13253121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221 (or 1218 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 13253121 is about 3640.4836217184. The cubic root of 13253121 is about 236.6497523674.

Adding to 13253121 its reverse (12135231), we get a palindrome (25388352).

The spelling of 13253121 in words is "thirteen million, two hundred fifty-three thousand, one hundred twenty-one".