211043131111 has 2 divisors, whose sum is σ = 211043131112. Its totient is φ = 211043131110.

The previous prime is 211043131027. The next prime is 211043131129. The reversal of 211043131111 is 111131340112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211043131111 - 2⁷ = 211043130983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211043135111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105521565555 + 105521565556.

It is an arithmetic number, because the mean of its divisors is an integer number (105521565556).

Almost surely, 2^211043131111 is an apocalyptic number.

211043131111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211043131111 is an equidigital number, since it uses as much as digits as its factorization.

211043131111 is an evil number, because the sum of its binary digits is even.

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

Adding to 211043131111 its reverse (111131340112), we get a palindrome (322174471223).

The spelling of 211043131111 in words is "two hundred eleven billion, forty-three million, one hundred thirty-one thousand, one hundred eleven".