104455554221 has 2 divisors, whose sum is σ = 104455554222. Its totient is φ = 104455554220.

The previous prime is 104455554191. The next prime is 104455554271. The reversal of 104455554221 is 122455554401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61600758025 + 42854796196 = 248195^2 + 207014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104455554221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104455554271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52227777110 + 52227777111.

It is an arithmetic number, because the mean of its divisors is an integer number (52227777111).

Almost surely, 2^104455554221 is an apocalyptic number.

It is an amenable number.

104455554221 is a deficient number, since it is larger than the sum of its proper divisors (1).

104455554221 is an equidigital number, since it uses as much as digits as its factorization.

104455554221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160000, while the sum is 38.

The spelling of 104455554221 in words is "one hundred four billion, four hundred fifty-five million, five hundred fifty-four thousand, two hundred twenty-one".