104001312221 has 2 divisors, whose sum is σ = 104001312222. Its totient is φ = 104001312220.

The previous prime is 104001312203. The next prime is 104001312281. The reversal of 104001312221 is 122213100401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87518347225 + 16482964996 = 295835^2 + 128386^2 .

It is a cyclic number.

It is not a de Polignac number, because 104001312221 - 2²⁶ = 103934203357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 104001312221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104001312281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52000656110 + 52000656111.

It is an arithmetic number, because the mean of its divisors is an integer number (52000656111).

Almost surely, 2^104001312221 is an apocalyptic number.

It is an amenable number.

104001312221 is a deficient number, since it is larger than the sum of its proper divisors (1).

104001312221 is an equidigital number, since it uses as much as digits as its factorization.

104001312221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 104001312221 its reverse (122213100401), we get a palindrome (226214412622).

The spelling of 104001312221 in words is "one hundred four billion, one million, three hundred twelve thousand, two hundred twenty-one".