2111304031111 has 16 divisors (see below), whose sum is σ = 2359713837600. Its totient is φ = 1872318169600.

The previous prime is 2111304031093. The next prime is 2111304031127. The reversal of 2111304031111 is 1111304031112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111304031111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111304031171) 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, 3349035 + ... + 3929203.

It is an arithmetic number, because the mean of its divisors is an integer number (147482114850).

Almost surely, 2^{2111304031111} is an apocalyptic number.

2111304031111 is a deficient number, since it is larger than the sum of its proper divisors (248409806489).

2111304031111 is a wasteful number, since it uses less digits than its factorization.

2111304031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588290.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 2111304031111 its reverse (1111304031112), we get a palindrome (3222608062223).

Subtracting from 2111304031111 its reverse (1111304031112), we obtain a palindrome (999999999999).

The spelling of 2111304031111 in words is "two trillion, one hundred eleven billion, three hundred four million, thirty-one thousand, one hundred eleven".