12124221025 has 12 divisors (see below), whose sum is σ = 17181753472. Its totient is φ = 8313751440.

The previous prime is 12124221019. The next prime is 12124221037. The reversal of 12124221025 is 52012242121.

12124221025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12124221025 - 2⁹ = 12124220513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12124220987 and 12124221005.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 34640457 + ... + 34640806.

Almost surely, 2^12124221025 is an apocalyptic number.

It is an amenable number.

12124221025 is a deficient number, since it is larger than the sum of its proper divisors (5057532447).

12124221025 is an equidigital number, since it uses as much as digits as its factorization.

12124221025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69281280 (or 69281275 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 12124221025 its reverse (52012242121), we get a palindrome (64136463146).

The spelling of 12124221025 in words is "twelve billion, one hundred twenty-four million, two hundred twenty-one thousand, twenty-five".