116221 has 4 divisors (see below), whose sum is σ = 132832. Its totient is φ = 99612.

The previous prime is 116201. The next prime is 116239. The reversal of 116221 is 122611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 116221 - 2⁵ = 116189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8295 + ... + 8308.

It is an arithmetic number, because the mean of its divisors is an integer number (33208).

2¹¹⁶²²¹ is an apocalyptic number.

It is an amenable number.

116221 is a deficient number, since it is larger than the sum of its proper divisors (16611).

116221 is an equidigital number, since it uses as much as digits as its factorization.

116221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16610.

The product of its digits is 24, while the sum is 13.

The square root of 116221 is about 340.9120121087. The cubic root of 116221 is about 48.8009417090.

Adding to 116221 its reverse (122611), we get a palindrome (238832).

The spelling of 116221 in words is "one hundred sixteen thousand, two hundred twenty-one".