212123030011 has 2 divisors, whose sum is σ = 212123030012. Its totient is φ = 212123030010.

The previous prime is 212123029957. The next prime is 212123030039. The reversal of 212123030011 is 110030321212.

212123030011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212123030011 - 2⁷ = 212123029883 is a prime.

It is a super-2 number, since 2×212123030011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212123030071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061515005 + 106061515006.

It is an arithmetic number, because the mean of its divisors is an integer number (106061515006).

Almost surely, 2^212123030011 is an apocalyptic number.

212123030011 is a deficient number, since it is larger than the sum of its proper divisors (1).

212123030011 is an equidigital number, since it uses as much as digits as its factorization.

212123030011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 212123030011 its reverse (110030321212), we get a palindrome (322153351223).

The spelling of 212123030011 in words is "two hundred twelve billion, one hundred twenty-three million, thirty thousand, eleven".