104432221 has 2 divisors, whose sum is σ = 104432222. Its totient is φ = 104432220.

The previous prime is 104432203. The next prime is 104432243. The reversal of 104432221 is 122234401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95062500 + 9369721 = 9750^2 + 3061^2 .

It is an emirp because it is prime and its reverse (122234401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104432221 - 2⁹ = 104431709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104432201) 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 as a sum of consecutive naturals, namely, 52216110 + 52216111.

It is an arithmetic number, because the mean of its divisors is an integer number (52216111).

Almost surely, 2^104432221 is an apocalyptic number.

It is an amenable number.

104432221 is a deficient number, since it is larger than the sum of its proper divisors (1).

104432221 is an equidigital number, since it uses as much as digits as its factorization.

104432221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 104432221 is about 10219.2084331420. The cubic root of 104432221 is about 470.9175090650.

Adding to 104432221 its reverse (122234401), we get a palindrome (226666622).

It can be divided in two parts, 104432 and 221, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 104432221 in words is "one hundred four million, four hundred thirty-two thousand, two hundred twenty-one".