104453221721 has 2 divisors, whose sum is σ = 104453221722. Its totient is φ = 104453221720.

The previous prime is 104453221681. The next prime is 104453221759. The reversal of 104453221721 is 127122354401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101117004121 + 3336217600 = 317989^2 + 57760^2 .

It is a cyclic number.

It is not a de Polignac number, because 104453221721 - 2¹⁸ = 104452959577 is a prime.

It is not a weakly prime, because it can be changed into another prime (104453221321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52226610860 + 52226610861.

It is an arithmetic number, because the mean of its divisors is an integer number (52226610861).

Almost surely, 2^104453221721 is an apocalyptic number.

It is an amenable number.

104453221721 is a deficient number, since it is larger than the sum of its proper divisors (1).

104453221721 is an equidigital number, since it uses as much as digits as its factorization.

104453221721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The spelling of 104453221721 in words is "one hundred four billion, four hundred fifty-three million, two hundred twenty-one thousand, seven hundred twenty-one".