211111110022011 has 16 divisors (see below), whose sum is σ = 282084854338560. Its totient is φ = 140439085633440.

The previous prime is 211111110021961. The next prime is 211111110022049. The reversal of 211111110022011 is 110220011111112.

It is not a de Polignac number, because 211111110022011 - 2²¹ = 211111107924859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211111110022411) 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 15 ways as a sum of consecutive naturals, for example, 21736881 + ... + 29911773.

It is an arithmetic number, because the mean of its divisors is an integer number (17630303396160).

Almost surely, 2^{211111110022011} is an apocalyptic number.

211111110022011 is a deficient number, since it is larger than the sum of its proper divisors (70973744316549).

211111110022011 is a wasteful number, since it uses less digits than its factorization.

211111110022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8193346.

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

Adding to 211111110022011 its reverse (110220011111112), we get a palindrome (321331121133123).

The spelling of 211111110022011 in words is "two hundred eleven trillion, one hundred eleven billion, one hundred ten million, twenty-two thousand, eleven".