21704114207 has 2 divisors, whose sum is σ = 21704114208. Its totient is φ = 21704114206.

The previous prime is 21704114093. The next prime is 21704114221. The reversal of 21704114207 is 70241140712.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21704114207 - 2¹⁸ = 21703852063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21704114207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21704114287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10852057103 + 10852057104.

It is an arithmetic number, because the mean of its divisors is an integer number (10852057104).

Almost surely, 2^21704114207 is an apocalyptic number.

21704114207 is a deficient number, since it is larger than the sum of its proper divisors (1).

21704114207 is an equidigital number, since it uses as much as digits as its factorization.

21704114207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 21704114207 its reverse (70241140712), we get a palindrome (91945254919).

The spelling of 21704114207 in words is "twenty-one billion, seven hundred four million, one hundred fourteen thousand, two hundred seven".