211201711 has 12 divisors (see below), whose sum is σ = 245927640. Its totient is φ = 180850320.

The previous prime is 211201657. The next prime is 211201721. The reversal of 211201711 is 117102112.

It is not a de Polignac number, because 211201711 - 2²¹ = 209104559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 78100 + ... + 80758.

It is an arithmetic number, because the mean of its divisors is an integer number (20493970).

Almost surely, 2^211201711 is an apocalyptic number.

211201711 is a deficient number, since it is larger than the sum of its proper divisors (34725929).

211201711 is a wasteful number, since it uses less digits than its factorization.

211201711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 16.

The square root of 211201711 is about 14532.7805667051. The cubic root of 211201711 is about 595.5238293504.

Adding to 211201711 its reverse (117102112), we get a palindrome (328303823).

The spelling of 211201711 in words is "two hundred eleven million, two hundred one thousand, seven hundred eleven".