7168221 has 12 divisors (see below), whose sum is σ = 10395840. Its totient is φ = 4759560.

The previous prime is 7168219. The next prime is 7168243. The reversal of 7168221 is 1228617.

It is not a de Polignac number, because 7168221 - 2¹ = 7168219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7168211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 970 + ... + 3908.

It is an arithmetic number, because the mean of its divisors is an integer number (866320).

Almost surely, 2^7168221 is an apocalyptic number.

It is an amenable number.

7168221 is a deficient number, since it is larger than the sum of its proper divisors (3227619).

7168221 is a wasteful number, since it uses less digits than its factorization.

7168221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216 (or 3213 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 7168221 is about 2677.3533573288. The cubic root of 7168221 is about 192.8133626666.

The spelling of 7168221 in words is "seven million, one hundred sixty-eight thousand, two hundred twenty-one".