210530011 has 2 divisors, whose sum is σ = 210530012. Its totient is φ = 210530010.

The previous prime is 210530009. The next prime is 210530069. The reversal of 210530011 is 110035012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210530011 - 2¹ = 210530009 is a prime.

Together with 210530009, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 210529973 and 210530000.

It is not a weakly prime, because it can be changed into another prime (210534011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105265005 + 105265006.

It is an arithmetic number, because the mean of its divisors is an integer number (105265006).

Almost surely, 2^210530011 is an apocalyptic number.

210530011 is a deficient number, since it is larger than the sum of its proper divisors (1).

210530011 is an equidigital number, since it uses as much as digits as its factorization.

210530011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 210530011 is about 14509.6523390466. The cubic root of 210530011 is about 594.8918297816.

Adding to 210530011 its reverse (110035012), we get a palindrome (320565023).

The spelling of 210530011 in words is "two hundred ten million, five hundred thirty thousand, eleven".