104312221 has 16 divisors (see below), whose sum is σ = 120025584. Its totient is φ = 89800704.

The previous prime is 104312209. The next prime is 104312227. The reversal of 104312221 is 122213401.

It can be written as a sum of positive squares in 8 ways, for example, as 1512900 + 102799321 = 1230^2 + 10139^2 .

It is a cyclic number.

It is not a de Polignac number, because 104312221 - 2⁵ = 104312189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 104312195 and 104312204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104312227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22885 + ... + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (7501599).

Almost surely, 2^104312221 is an apocalyptic number.

It is an amenable number.

104312221 is a deficient number, since it is larger than the sum of its proper divisors (15713363).

104312221 is a wasteful number, since it uses less digits than its factorization.

104312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4320.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 104312221 is about 10213.3354493035. The cubic root of 104312221 is about 470.7370674379.

Adding to 104312221 its reverse (122213401), we get a palindrome (226525622).

The spelling of 104312221 in words is "one hundred four million, three hundred twelve thousand, two hundred twenty-one".