104525120221 has 4 divisors (see below), whose sum is σ = 106238646844. Its totient is φ = 102811593600.

The previous prime is 104525120209. The next prime is 104525120269. The reversal of 104525120221 is 122021525401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122021525401 = 11549 ⋅10565549.

It can be written as a sum of positive squares in 2 ways, for example, as 28355192100 + 76169928121 = 168390^2 + 275989^2 .

It is a cyclic number.

It is not a de Polignac number, because 104525120221 - 2¹⁹ = 104524595933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104525120291) 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 in 3 ways as a sum of consecutive naturals, for example, 856763220 + ... + 856763341.

It is an arithmetic number, because the mean of its divisors is an integer number (26559661711).

Almost surely, 2^104525120221 is an apocalyptic number.

It is an amenable number.

104525120221 is a deficient number, since it is larger than the sum of its proper divisors (1713526623).

104525120221 is an equidigital number, since it uses as much as digits as its factorization.

104525120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713526622.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 104525120221 its reverse (122021525401), we get a palindrome (226546645622).

The spelling of 104525120221 in words is "one hundred four billion, five hundred twenty-five million, one hundred twenty thousand, two hundred twenty-one".