2111131211 has 16 divisors (see below), whose sum is σ = 2541081600. Its totient is φ = 1713374208.

The previous prime is 2111131159. The next prime is 2111131219. The reversal of 2111131211 is 1121311112.

It is not a de Polignac number, because 2111131211 - 2¹⁸ = 2110869067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111131219) 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, 354686 + ... + 360588.

It is an arithmetic number, because the mean of its divisors is an integer number (158817600).

Almost surely, 2^2111131211 is an apocalyptic number.

2111131211 is a deficient number, since it is larger than the sum of its proper divisors (429950389).

2111131211 is a wasteful number, since it uses less digits than its factorization.

2111131211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8618.

The product of its digits is 12, while the sum is 14.

The square root of 2111131211 is about 45947.0479029937. The cubic root of 2111131211 is about 1282.8377816993.

Adding to 2111131211 its reverse (1121311112), we get a palindrome (3232442323).

The spelling of 2111131211 in words is "two billion, one hundred eleven million, one hundred thirty-one thousand, two hundred eleven".