12421134425125 has 8 divisors (see below), whose sum is σ = 15501575762712. Its totient is φ = 9936907540000.

The previous prime is 12421134425107. The next prime is 12421134425131. The reversal of 12421134425125 is 52152443112421.

It can be written as a sum of positive squares in 4 ways, for example, as 374355527716 + 12046778897409 = 611846^2 + 3470847^2 .

It is not a de Polignac number, because 12421134425125 - 2¹⁵ = 12421134392357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49684537576 + ... + 49684537825.

It is an arithmetic number, because the mean of its divisors is an integer number (1937696970339).

Almost surely, 2^{12421134425125} is an apocalyptic number.

It is an amenable number.

12421134425125 is a deficient number, since it is larger than the sum of its proper divisors (3080441337587).

12421134425125 is an frugal number, since it uses more digits than its factorization.

12421134425125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99369075416 (or 99369075406 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

Adding to 12421134425125 its reverse (52152443112421), we get a palindrome (64573577537546).

The spelling of 12421134425125 in words is "twelve trillion, four hundred twenty-one billion, one hundred thirty-four million, four hundred twenty-five thousand, one hundred twenty-five".