211113221011 has 16 divisors (see below), whose sum is σ = 265812104448. Its totient is φ = 162875052000.

The previous prime is 211113221003. The next prime is 211113221041. The reversal of 211113221011 is 110122311112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211113221011 - 2³ = 211113221003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211113221041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13565145 + ... + 13580698.

It is an arithmetic number, because the mean of its divisors is an integer number (16613256528).

Almost surely, 2^211113221011 is an apocalyptic number.

211113221011 is a deficient number, since it is larger than the sum of its proper divisors (54698883437).

211113221011 is a wasteful number, since it uses less digits than its factorization.

211113221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27145962.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 211113221011 its reverse (110122311112), we get a palindrome (321235532123).

The spelling of 211113221011 in words is "two hundred eleven billion, one hundred thirteen million, two hundred twenty-one thousand, eleven".