221642062563171 has 8 divisors (see below), whose sum is σ = 295564320340560. Its totient is φ = 147740589913952.

The previous prime is 221642062563157. The next prime is 221642062563203. The reversal of 221642062563171 is 171365260246122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221642062563171 - 2²⁵ = 221642029008739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221642062563171.

It is not an unprimeable number, because it can be changed into a prime (221642062563671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5196257160 + ... + 5196299813.

It is an arithmetic number, because the mean of its divisors is an integer number (36945540042570).

Almost surely, 2^{221642062563171} is an apocalyptic number.

221642062563171 is a deficient number, since it is larger than the sum of its proper divisors (73922257777389).

221642062563171 is a wasteful number, since it uses less digits than its factorization.

221642062563171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10392564085.

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 221642062563171 in words is "two hundred twenty-one trillion, six hundred forty-two billion, sixty-two million, five hundred sixty-three thousand, one hundred seventy-one".