211045111 has 2 divisors, whose sum is σ = 211045112. Its totient is φ = 211045110.

The previous prime is 211045091. The next prime is 211045199. The reversal of 211045111 is 111540112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211045111 - 2⁷ = 211044983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211045411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105522555 + 105522556.

It is an arithmetic number, because the mean of its divisors is an integer number (105522556).

Almost surely, 2^211045111 is an apocalyptic number.

211045111 is a deficient number, since it is larger than the sum of its proper divisors (1).

211045111 is an equidigital number, since it uses as much as digits as its factorization.

211045111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 211045111 is about 14527.3917480049. The cubic root of 211045111 is about 595.3766050210.

Adding to 211045111 its reverse (111540112), we get a palindrome (322585223).

The spelling of 211045111 in words is "two hundred eleven million, forty-five thousand, one hundred eleven".