211112389 has 2 divisors, whose sum is σ = 211112390. Its totient is φ = 211112388.

The previous prime is 211112381. The next prime is 211112437. The reversal of 211112389 is 983211112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159516900 + 51595489 = 12630^2 + 7183^2 .

It is a cyclic number.

It is not a de Polignac number, because 211112389 - 2³ = 211112381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211112381) 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, 105556194 + 105556195.

It is an arithmetic number, because the mean of its divisors is an integer number (105556195).

Almost surely, 2^211112389 is an apocalyptic number.

It is an amenable number.

211112389 is a deficient number, since it is larger than the sum of its proper divisors (1).

211112389 is an equidigital number, since it uses as much as digits as its factorization.

211112389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 28.

The square root of 211112389 is about 14529.7071202416. The cubic root of 211112389 is about 595.4398639950.

The spelling of 211112389 in words is "two hundred eleven million, one hundred twelve thousand, three hundred eighty-nine".