12524112021 has 4 divisors (see below), whose sum is σ = 16698816032. Its totient is φ = 8349408012.

The previous prime is 12524112019. The next prime is 12524112023. The reversal of 12524112021 is 12021142521.

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 an interprime number because it is at equal distance from previous prime (12524112019) and next prime (12524112023).

It is not a de Polignac number, because 12524112021 - 2¹ = 12524112019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12524112023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2087352001 + ... + 2087352006.

It is an arithmetic number, because the mean of its divisors is an integer number (4174704008).

Almost surely, 2^12524112021 is an apocalyptic number.

It is an amenable number.

12524112021 is a deficient number, since it is larger than the sum of its proper divisors (4174704011).

12524112021 is an equidigital number, since it uses as much as digits as its factorization.

12524112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174704010.

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 12524112021 its reverse (12021142521), we get a palindrome (24545254542).

The spelling of 12524112021 in words is "twelve billion, five hundred twenty-four million, one hundred twelve thousand, twenty-one".