217384400012 has 12 divisors (see below), whose sum is σ = 409685984736. Its totient is φ = 100331261520.

The previous prime is 217384400011. The next prime is 217384400053. The reversal of 217384400012 is 210004483712.

217384400012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (217384400011) 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, 2090234564 + ... + 2090234667.

It is an arithmetic number, because the mean of its divisors is an integer number (34140498728).

Almost surely, 2^217384400012 is an apocalyptic number.

It is an amenable number.

217384400012 is a deficient number, since it is larger than the sum of its proper divisors (192301584724).

217384400012 is a wasteful number, since it uses less digits than its factorization.

217384400012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180469248 (or 4180469246 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 217384400012 its reverse (210004483712), we get a palindrome (427388883724).

The spelling of 217384400012 in words is "two hundred seventeen billion, three hundred eighty-four million, four hundred thousand, twelve".