211112221011 has 32 divisors (see below), whose sum is σ = 299140304640. Its totient is φ = 132179838336.

The previous prime is 211112220989. The next prime is 211112221079. The reversal of 211112221011 is 110122211112.

It is a happy number.

It is not a de Polignac number, because 211112221011 - 2¹¹ = 211112218963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211112221211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16819440 + ... + 16831986.

It is an arithmetic number, because the mean of its divisors is an integer number (9348134520).

Almost surely, 2^211112221011 is an apocalyptic number.

211112221011 is a deficient number, since it is larger than the sum of its proper divisors (88028083629).

211112221011 is a wasteful number, since it uses less digits than its factorization.

211112221011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17843.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211112221011 its reverse (110122211112), we get a palindrome (321234432123).

The spelling of 211112221011 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty-one thousand, eleven".