221534456134671 has 6 divisors (see below), whose sum is σ = 319994214416760. Its totient is φ = 147689637423108.

The previous prime is 221534456134657. The next prime is 221534456134697. The reversal of 221534456134671 is 176431654435122.

221534456134671 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 3 + 4 + 4 + 561 + 3 + 4 + 6 + 71 = 666.

It is not a de Polignac number, because 221534456134671 - 2²³ = 221534447746063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221534456130671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12307469785251 + ... + 12307469785268.

It is an arithmetic number, because the mean of its divisors is an integer number (53332369069460).

Almost surely, 2^{221534456134671} is an apocalyptic number.

221534456134671 is a deficient number, since it is larger than the sum of its proper divisors (98459758282089).

221534456134671 is a wasteful number, since it uses less digits than its factorization.

221534456134671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24614939570525 (or 24614939570522 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 221534456134671 in words is "two hundred twenty-one trillion, five hundred thirty-four billion, four hundred fifty-six million, one hundred thirty-four thousand, six hundred seventy-one".