104221 has 4 divisors (see below), whose sum is σ = 112252. Its totient is φ = 96192.

The previous prime is 104207. The next prime is 104231. The reversal of 104221 is 122401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36100 + 68121 = 190^2 + 261^2 .

It is a cyclic number.

It is not a de Polignac number, because 104221 - 2¹⁵ = 71453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104198 and 104207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104231) 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, 3996 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (28063).

2¹⁰⁴²²¹ is an apocalyptic number.

It is an amenable number.

104221 is a deficient number, since it is larger than the sum of its proper divisors (8031).

104221 is an equidigital number, since it uses as much as digits as its factorization.

104221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 104221 is about 322.8327740487. The cubic root of 104221 is about 47.0599807620.

Adding to 104221 its reverse (122401), we get a palindrome (226622).

It can be divided in two parts, 104 and 221, that added together give a triangular number (325 = T₂₅).

The spelling of 104221 in words is "one hundred four thousand, two hundred twenty-one", and thus it is an iban number.