211201210111011 has 12 divisors (see below), whose sum is σ = 285623695662216. Its totient is φ = 138817696776640.

The previous prime is 211201210110997. The next prime is 211201210111027. The reversal of 211201210111011 is 110111012102112.

It is not a de Polignac number, because 211201210111011 - 2²² = 211201205916707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211201210111061) 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 11 ways as a sum of consecutive naturals, for example, 6982766406 + ... + 6982796651.

It is an arithmetic number, because the mean of its divisors is an integer number (23801974638518).

Almost surely, 2^{211201210111011} is an apocalyptic number.

211201210111011 is a deficient number, since it is larger than the sum of its proper divisors (74422485551205).

211201210111011 is an equidigital number, since it uses as much as digits as its factorization.

211201210111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13965563202 (or 13965563131 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 211201210111011 its reverse (110111012102112), we get a palindrome (321312222213123).

The spelling of 211201210111011 in words is "two hundred eleven trillion, two hundred one billion, two hundred ten million, one hundred eleven thousand, eleven".