221101200017 has 2 divisors, whose sum is σ = 221101200018. Its totient is φ = 221101200016.

The previous prime is 221101200011. The next prime is 221101200059. The reversal of 221101200017 is 710002101122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219525983296 + 1575216721 = 468536^2 + 39689^2 .

It is a cyclic number.

It is not a de Polignac number, because 221101200017 - 2¹⁶ = 221101134481 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221101199968 and 221101200004.

It is not a weakly prime, because it can be changed into another prime (221101200011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550600008 + 110550600009.

It is an arithmetic number, because the mean of its divisors is an integer number (110550600009).

Almost surely, 2^221101200017 is an apocalyptic number.

It is an amenable number.

221101200017 is a deficient number, since it is larger than the sum of its proper divisors (1).

221101200017 is an equidigital number, since it uses as much as digits as its factorization.

221101200017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 221101200017 its reverse (710002101122), we get a palindrome (931103301139).

The spelling of 221101200017 in words is "two hundred twenty-one billion, one hundred one million, two hundred thousand, seventeen".