97221 has 8 divisors (see below), whose sum is σ = 135360. Its totient is φ = 61952.

The previous prime is 97213. The next prime is 97231. The reversal of 97221 is 12279.

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 97221 - 2³ = 97213 is a prime.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97221.

It is not an unprimeable number, because it can be changed into a prime (97231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636 + ... + 773.

It is an arithmetic number, because the mean of its divisors is an integer number (16920).

2⁹⁷²²¹ is an apocalyptic number.

It is an amenable number.

97221 is a deficient number, since it is larger than the sum of its proper divisors (38139).

97221 is a wasteful number, since it uses less digits than its factorization.

97221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1435.

The product of its digits is 252, while the sum is 21.

The square root of 97221 is about 311.8028223092. The cubic root of 97221 is about 45.9818769188.

Subtracting from 97221 its product of digits (252), we obtain a palindrome (96969).

The spelling of 97221 in words is "ninety-seven thousand, two hundred twenty-one".