212021121227 has 2 divisors, whose sum is σ = 212021121228.
Its totient is φ = 212021121226.
The previous prime is 212021121199. The next prime is 212021121269. The reversal of 212021121227 is 722121120212.
212021121227 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 212021121227 - 216 = 212021055691 is a prime.
It is not a weakly prime, because it can be changed into another prime (212021921227) 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, 106010560613 + 106010560614.
It is an arithmetic number, because the mean of its divisors is an integer number (106010560614).
Almost surely, 2212021121227 is an apocalyptic number.
212021121227 is a deficient number, since it is larger than the sum of its proper divisors (1).
212021121227 is an equidigital number, since it uses as much as digits as its factorization.
212021121227 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 448, while the sum is 23.
Adding to 212021121227 its reverse (722121120212), we get a palindrome (934142241439).
The spelling of 212021121227 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-seven".