13125413035221 has 16 divisors (see below), whose sum is σ = 18082606645248. Its totient is φ = 8459794954800.

The previous prime is 13125413035219. The next prime is 13125413035237. The reversal of 13125413035221 is 12253031452131.

It is a happy number.

It is not a de Polignac number, because 13125413035221 - 2¹ = 13125413035219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125413035211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68349061 + ... + 68540826.

It is an arithmetic number, because the mean of its divisors is an integer number (1130162915328).

Almost surely, 2^{13125413035221} is an apocalyptic number.

It is an amenable number.

13125413035221 is a deficient number, since it is larger than the sum of its proper divisors (4957193610027).

13125413035221 is a wasteful number, since it uses less digits than its factorization.

13125413035221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136890952.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 13125413035221 its reverse (12253031452131), we get a palindrome (25378444487352).

The spelling of 13125413035221 in words is "thirteen trillion, one hundred twenty-five billion, four hundred thirteen million, thirty-five thousand, two hundred twenty-one".