212134243 has 2 divisors, whose sum is σ = 212134244. Its totient is φ = 212134242.

The previous prime is 212134229. The next prime is 212134289. The reversal of 212134243 is 342431212.

212134243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212134243 - 2⁹ = 212133731 is a prime.

It is not a weakly prime, because it can be changed into another prime (212134843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106067121 + 106067122.

It is an arithmetic number, because the mean of its divisors is an integer number (106067122).

Almost surely, 2^212134243 is an apocalyptic number.

212134243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212134243 is an equidigital number, since it uses as much as digits as its factorization.

212134243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 22.

The square root of 212134243 is about 14564.8289725626. The cubic root of 212134243 is about 596.3990269270.

Adding to 212134243 its reverse (342431212), we get a palindrome (554565455).

The spelling of 212134243 in words is "two hundred twelve million, one hundred thirty-four thousand, two hundred forty-three".