12465021 has 4 divisors (see below), whose sum is σ = 16620032. Its totient is φ = 8310012.

The previous prime is 12465001. The next prime is 12465049. The reversal of 12465021 is 12056421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12465021 - 2⁹ = 12464509 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12465001) 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, 2077501 + ... + 2077506.

It is an arithmetic number, because the mean of its divisors is an integer number (4155008).

Almost surely, 2^12465021 is an apocalyptic number.

It is an amenable number.

12465021 is a deficient number, since it is larger than the sum of its proper divisors (4155011).

12465021 is an equidigital number, since it uses as much as digits as its factorization.

12465021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155010.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 12465021 is about 3530.5836627957. The cubic root of 12465021 is about 231.8627619273.

The spelling of 12465021 in words is "twelve million, four hundred sixty-five thousand, twenty-one".