211143023111 has 2 divisors, whose sum is σ = 211143023112. Its totient is φ = 211143023110.

The previous prime is 211143023027. The next prime is 211143023149. The reversal of 211143023111 is 111320341112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211143023111 - 2²² = 211138828807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211143023171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105571511555 + 105571511556.

It is an arithmetic number, because the mean of its divisors is an integer number (105571511556).

Almost surely, 2^211143023111 is an apocalyptic number.

211143023111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211143023111 is an equidigital number, since it uses as much as digits as its factorization.

211143023111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 211143023111 its reverse (111320341112), we get a palindrome (322463364223).

The spelling of 211143023111 in words is "two hundred eleven billion, one hundred forty-three million, twenty-three thousand, one hundred eleven".