221104542305 has 8 divisors (see below), whose sum is σ = 266269671144. Its totient is φ = 176254153600.

The previous prime is 221104542283. The next prime is 221104542313. The reversal of 221104542305 is 503245401122.

It can be written as a sum of positive squares in 4 ways, for example, as 7689185344 + 213415356961 = 87688^2 + 461969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221104542305 - 2²⁰ = 221103493729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78683486 + ... + 78686295.

It is an arithmetic number, because the mean of its divisors is an integer number (33283708893).

Almost surely, 2^221104542305 is an apocalyptic number.

It is an amenable number.

221104542305 is a deficient number, since it is larger than the sum of its proper divisors (45165128839).

221104542305 is a wasteful number, since it uses less digits than its factorization.

221104542305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157370067.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 221104542305 its reverse (503245401122), we get a palindrome (724349943427).

The spelling of 221104542305 in words is "two hundred twenty-one billion, one hundred four million, five hundred forty-two thousand, three hundred five".