211442113 has 2 divisors, whose sum is σ = 211442114. Its totient is φ = 211442112.

The previous prime is 211442111. The next prime is 211442131. The reversal of 211442113 is 311244112.

Together with next prime (211442131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192848769 + 18593344 = 13887^2 + 4312^2 .

It is a cyclic number.

It is not a de Polignac number, because 211442113 - 2¹ = 211442111 is a prime.

Together with 211442111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211442111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105721056 + 105721057.

It is an arithmetic number, because the mean of its divisors is an integer number (105721057).

Almost surely, 2^211442113 is an apocalyptic number.

It is an amenable number.

211442113 is a deficient number, since it is larger than the sum of its proper divisors (1).

211442113 is an equidigital number, since it uses as much as digits as its factorization.

211442113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 211442113 is about 14541.0492399964. The cubic root of 211442113 is about 595.7496968929.

Adding to 211442113 its reverse (311244112), we get a palindrome (522686225).

The spelling of 211442113 in words is "two hundred eleven million, four hundred forty-two thousand, one hundred thirteen".