211422217087 has 2 divisors, whose sum is σ = 211422217088. Its totient is φ = 211422217086.

The previous prime is 211422217073. The next prime is 211422217117. The reversal of 211422217087 is 780712224112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211422217087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211422211087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105711108543 + 105711108544.

It is an arithmetic number, because the mean of its divisors is an integer number (105711108544).

Almost surely, 2^211422217087 is an apocalyptic number.

211422217087 is a deficient number, since it is larger than the sum of its proper divisors (1).

211422217087 is an equidigital number, since it uses as much as digits as its factorization.

211422217087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 37.

The spelling of 211422217087 in words is "two hundred eleven billion, four hundred twenty-two million, two hundred seventeen thousand, eighty-seven".