212511011 has 2 divisors, whose sum is σ = 212511012. Its totient is φ = 212511010.

The previous prime is 212511001. The next prime is 212511041. The reversal of 212511011 is 110115212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212511011 - 2¹⁰ = 212509987 is a prime.

It is not a weakly prime, because it can be changed into another prime (212511001) 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, 106255505 + 106255506.

It is an arithmetic number, because the mean of its divisors is an integer number (106255506).

Almost surely, 2^212511011 is an apocalyptic number.

212511011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212511011 is an equidigital number, since it uses as much as digits as its factorization.

212511011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20, while the sum is 14.

The square root of 212511011 is about 14577.7574064051. The cubic root of 212511011 is about 596.7519028001.

Adding to 212511011 its reverse (110115212), we get a palindrome (322626223).

The spelling of 212511011 in words is "two hundred twelve million, five hundred eleven thousand, eleven".