211232243 has 2 divisors, whose sum is σ = 211232244. Its totient is φ = 211232242.

The previous prime is 211232209. The next prime is 211232251. The reversal of 211232243 is 342232112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211232243 - 2⁶ = 211232179 is a prime.

It is a super-2 number, since 2×211232243² = 89238120965622098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211232743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105616121 + 105616122.

It is an arithmetic number, because the mean of its divisors is an integer number (105616122).

Almost surely, 2^211232243 is an apocalyptic number.

211232243 is a deficient number, since it is larger than the sum of its proper divisors (1).

211232243 is an equidigital number, since it uses as much as digits as its factorization.

211232243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 211232243 is about 14533.8309815410. The cubic root of 211232243 is about 595.5525249156.

Adding to 211232243 its reverse (342232112), we get a palindrome (553464355).

The spelling of 211232243 in words is "two hundred eleven million, two hundred thirty-two thousand, two hundred forty-three".