2012304521 has 4 divisors (see below), whose sum is σ = 2012407572. Its totient is φ = 2012201472.

The previous prime is 2012304509. The next prime is 2012304527. The reversal of 2012304521 is 1254032102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1971804025 + 40500496 = 44405^2 + 6364^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012304521 - 2¹⁴ = 2012288137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012304493 and 2012304502.

It is not an unprimeable number, because it can be changed into a prime (2012304527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12260 + ... + 64613.

It is an arithmetic number, because the mean of its divisors is an integer number (503101893).

Almost surely, 2^2012304521 is an apocalyptic number.

It is an amenable number.

2012304521 is a deficient number, since it is larger than the sum of its proper divisors (103051).

2012304521 is an equidigital number, since it uses as much as digits as its factorization.

2012304521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103050.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2012304521 is about 44858.7173356528. The cubic root of 2012304521 is about 1262.4995567230.

Adding to 2012304521 its reverse (1254032102), we get a palindrome (3266336623).

The spelling of 2012304521 in words is "two billion, twelve million, three hundred four thousand, five hundred twenty-one".