12653121 has 8 divisors (see below), whose sum is σ = 18168640. Its totient is φ = 7786512.

The previous prime is 12653119. The next prime is 12653129. The reversal of 12653121 is 12135621.

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

It is not a de Polignac number, because 12653121 - 2¹ = 12653119 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12653129) 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, 162181 + ... + 162258.

It is an arithmetic number, because the mean of its divisors is an integer number (2271080).

Almost surely, 2^12653121 is an apocalyptic number.

It is an amenable number.

12653121 is a deficient number, since it is larger than the sum of its proper divisors (5515519).

12653121 is a wasteful number, since it uses less digits than its factorization.

12653121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324455.

The product of its digits is 360, while the sum is 21.

The square root of 12653121 is about 3557.1225730919. The cubic root of 12653121 is about 233.0232313651.

Adding to 12653121 its reverse (12135621), we get a palindrome (24788742).

The spelling of 12653121 in words is "twelve million, six hundred fifty-three thousand, one hundred twenty-one".