163167221 has 16 divisors (see below), whose sum is σ = 198733824. Its totient is φ = 130924464.

The previous prime is 163167211. The next prime is 163167239. The reversal of 163167221 is 122761361.

It is not a de Polignac number, because 163167221 - 2¹⁴ = 163150837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163167211) 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 15 ways as a sum of consecutive naturals, for example, 3215 + ... + 18348.

It is an arithmetic number, because the mean of its divisors is an integer number (12420864).

Almost surely, 2^163167221 is an apocalyptic number.

It is an amenable number.

163167221 is a deficient number, since it is larger than the sum of its proper divisors (35566603).

163167221 is a wasteful number, since it uses less digits than its factorization.

163167221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21640.

The product of its digits is 3024, while the sum is 29.

The square root of 163167221 is about 12773.6925358332. The cubic root of 163167221 is about 546.4422936953.

The spelling of 163167221 in words is "one hundred sixty-three million, one hundred sixty-seven thousand, two hundred twenty-one".