127210021625605 has 32 divisors (see below), whose sum is σ = 163230825542400. Its totient is φ = 94837643430912.

The previous prime is 127210021625593. The next prime is 127210021625629. The reversal of 127210021625605 is 506526120012721.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 127210021625605 - 2²⁷ = 127209887407877 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 10025745 + ... + 18839734.

It is an arithmetic number, because the mean of its divisors is an integer number (5100963298200).

Almost surely, 2^{127210021625605} is an apocalyptic number.

It is an amenable number.

127210021625605 is a deficient number, since it is larger than the sum of its proper divisors (36020803916795).

127210021625605 is a wasteful number, since it uses less digits than its factorization.

127210021625605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28866013.

The product of its (nonzero) digits is 100800, while the sum is 40.

The spelling of 127210021625605 in words is "one hundred twenty-seven trillion, two hundred ten billion, twenty-one million, six hundred twenty-five thousand, six hundred five".