2211111021111 has 16 divisors (see below), whose sum is σ = 3285861580800. Its totient is φ = 1314344631168.

The previous prime is 2211111021109. The next prime is 2211111021139. The reversal of 2211111021111 is 1111201111122.

It is not a de Polignac number, because 2211111021111 - 2¹ = 2211111021109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211111021151) 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, 1140923191 + ... + 1140925128.

It is an arithmetic number, because the mean of its divisors is an integer number (205366348800).

Almost surely, 2^{2211111021111} is an apocalyptic number.

2211111021111 is a deficient number, since it is larger than the sum of its proper divisors (1074750559689).

2211111021111 is a wasteful number, since it uses less digits than its factorization.

2211111021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281848358.

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

Adding to 2211111021111 its reverse (1111201111122), we get a palindrome (3322312132233).

The spelling of 2211111021111 in words is "two trillion, two hundred eleven billion, one hundred eleven million, twenty-one thousand, one hundred eleven".