212020850077 has 2 divisors, whose sum is σ = 212020850078. Its totient is φ = 212020850076.

The previous prime is 212020850047. The next prime is 212020850141. The reversal of 212020850077 is 770058020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181385699236 + 30635150841 = 425894^2 + 175029^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020850077 - 2¹¹ = 212020848029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020850047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010425038 + 106010425039.

It is an arithmetic number, because the mean of its divisors is an integer number (106010425039).

Almost surely, 2^212020850077 is an apocalyptic number.

It is an amenable number.

212020850077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020850077 is an equidigital number, since it uses as much as digits as its factorization.

212020850077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15680, while the sum is 34.

Adding to 212020850077 its reverse (770058020212), we get a palindrome (982078870289).

The spelling of 212020850077 in words is "two hundred twelve billion, twenty million, eight hundred fifty thousand, seventy-seven".