212303121311 has 2 divisors, whose sum is σ = 212303121312.
Its totient is φ = 212303121310.
The previous prime is 212303121299. The next prime is 212303121353. The reversal of 212303121311 is 113121303212.
It is a happy number.
212303121311 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 212303121311 - 210 = 212303120287 is a prime.
It is a Sophie Germain prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (212303121911) 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, 106151560655 + 106151560656.
It is an arithmetic number, because the mean of its divisors is an integer number (106151560656).
Almost surely, 2212303121311 is an apocalyptic number.
212303121311 is a deficient number, since it is larger than the sum of its proper divisors (1).
212303121311 is an equidigital number, since it uses as much as digits as its factorization.
212303121311 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 216, while the sum is 20.
Adding to 212303121311 its reverse (113121303212), we get a palindrome (325424424523).
The spelling of 212303121311 in words is "two hundred twelve billion, three hundred three million, one hundred twenty-one thousand, three hundred eleven".