217384400011 has 2 divisors, whose sum is σ = 217384400012. Its totient is φ = 217384400010.

The previous prime is 217384399993. The next prime is 217384400053. The reversal of 217384400011 is 110004483712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217384400011 - 2⁵ = 217384399979 is a prime.

It is not a weakly prime, because it can be changed into another prime (217384400081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108692200005 + 108692200006.

It is an arithmetic number, because the mean of its divisors is an integer number (108692200006).

Almost surely, 2^217384400011 is an apocalyptic number.

217384400011 is a deficient number, since it is larger than the sum of its proper divisors (1).

217384400011 is an equidigital number, since it uses as much as digits as its factorization.

217384400011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 217384400011 its reverse (110004483712), we get a palindrome (327388883723).

The spelling of 217384400011 in words is "two hundred seventeen billion, three hundred eighty-four million, four hundred thousand, eleven".