212343011 has 2 divisors, whose sum is σ = 212343012. Its totient is φ = 212343010.

The previous prime is 212342981. The next prime is 212343067. The reversal of 212343011 is 110343212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212343011 is a prime.

It is a super-2 number, since 2×212343011² = 90179108641092242, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212343071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106171505 + 106171506.

It is an arithmetic number, because the mean of its divisors is an integer number (106171506).

Almost surely, 2^212343011 is an apocalyptic number.

212343011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212343011 is an equidigital number, since it uses as much as digits as its factorization.

212343011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 212343011 is about 14571.9940639571. The cubic root of 212343011 is about 596.5946078135.

Adding to 212343011 its reverse (110343212), we get a palindrome (322686223).

The spelling of 212343011 in words is "two hundred twelve million, three hundred forty-three thousand, eleven".