12521124222201 has 80 divisors (see below), whose sum is σ = 22920396618240. Its totient is φ = 6648808458240.

The previous prime is 12521124222193. The next prime is 12521124222203. The reversal of 12521124222201 is 10222242112521.

12521124222201 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 1 + 12 + 422 + 220 + 1 = 666.

It is not a de Polignac number, because 12521124222201 - 2³ = 12521124222193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (12521124222203) 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 79 ways as a sum of consecutive naturals, for example, 7460080 + ... + 8983041.

It is an arithmetic number, because the mean of its divisors is an integer number (286504957728).

Almost surely, 2^{12521124222201} is an apocalyptic number.

It is an amenable number.

12521124222201 is a deficient number, since it is larger than the sum of its proper divisors (10399272396039).

12521124222201 is a wasteful number, since it uses less digits than its factorization.

12521124222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16443236 (or 16443227 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 12521124222201 its reverse (10222242112521), we get a palindrome (22743366334722).

The spelling of 12521124222201 in words is "twelve trillion, five hundred twenty-one billion, one hundred twenty-four million, two hundred twenty-two thousand, two hundred one".