221102200117 has 2 divisors, whose sum is σ = 221102200118. Its totient is φ = 221102200116.

The previous prime is 221102200061. The next prime is 221102200129. The reversal of 221102200117 is 711002201122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196828871716 + 24273328401 = 443654^2 + 155799^2 .

It is a cyclic number.

It is not a de Polignac number, because 221102200117 - 2³¹ = 218954716469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221102200094 and 221102200103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221102200817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551100058 + 110551100059.

It is an arithmetic number, because the mean of its divisors is an integer number (110551100059).

Almost surely, 2^221102200117 is an apocalyptic number.

It is an amenable number.

221102200117 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102200117 is an equidigital number, since it uses as much as digits as its factorization.

221102200117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 221102200117 its reverse (711002201122), we get a palindrome (932104401239).

The spelling of 221102200117 in words is "two hundred twenty-one billion, one hundred two million, two hundred thousand, one hundred seventeen".