212210211210077 has 2 divisors, whose sum is σ = 212210211210078. Its totient is φ = 212210211210076.

The previous prime is 212210211210061. The next prime is 212210211210131. The reversal of 212210211210077 is 770012112012212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208680964290436 + 3529246919641 = 14445794^2 + 1878629^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210211210077 - 2⁴ = 212210211210061 is a prime.

It is a super-4 number, since 4×212210211210077⁴ (a number of 58 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212210211200077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105105605038 + 106105105605039.

It is an arithmetic number, because the mean of its divisors is an integer number (106105105605039).

Almost surely, 2^{212210211210077} is an apocalyptic number.

It is an amenable number.

212210211210077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212210211210077 is an equidigital number, since it uses as much as digits as its factorization.

212210211210077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 29.

Adding to 212210211210077 its reverse (770012112012212), we get a palindrome (982222323222289).

The spelling of 212210211210077 in words is "two hundred twelve trillion, two hundred ten billion, two hundred eleven million, two hundred ten thousand, seventy-seven".