217107101056 has 32 divisors (see below), whose sum is σ = 444207739680. Its totient is φ = 105619668480.

The previous prime is 217107101033. The next prime is 217107101083. The reversal of 217107101056 is 650101701712.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22916200 + ... + 22925671.

It is an arithmetic number, because the mean of its divisors is an integer number (13881491865).

Almost surely, 2^217107101056 is an apocalyptic number.

It is an amenable number.

217107101056 is an abundant number, since it is smaller than the sum of its proper divisors (227100638624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

217107101056 is an equidigital number, since it uses as much as digits as its factorization.

217107101056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45841922 (or 45841910 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 31.

Adding to 217107101056 its reverse (650101701712), we get a palindrome (867208802768).

The spelling of 217107101056 in words is "two hundred seventeen billion, one hundred seven million, one hundred one thousand, fifty-six".