12504003253221 has 4 divisors (see below), whose sum is σ = 16672004337632. Its totient is φ = 8336002168812.

The previous prime is 12504003253213. The next prime is 12504003253241. The reversal of 12504003253221 is 12235230040521.

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 12504003253221 - 2³ = 12504003253213 is a prime.

It is a super-2 number, since 2×12504003253221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12504003253241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084000542201 + ... + 2084000542206.

It is an arithmetic number, because the mean of its divisors is an integer number (4168001084408).

Almost surely, 2^{12504003253221} is an apocalyptic number.

It is an amenable number.

12504003253221 is a deficient number, since it is larger than the sum of its proper divisors (4168001084411).

12504003253221 is an equidigital number, since it uses as much as digits as its factorization.

12504003253221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4168001084410.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 12504003253221 its reverse (12235230040521), we get a palindrome (24739233293742).

The spelling of 12504003253221 in words is "twelve trillion, five hundred four billion, three million, two hundred fifty-three thousand, two hundred twenty-one".