212346077 has 2 divisors, whose sum is σ = 212346078. Its totient is φ = 212346076.

The previous prime is 212346053. The next prime is 212346107. The reversal of 212346077 is 770643212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191241241 + 21104836 = 13829^2 + 4594^2 .

It is a cyclic number.

It is not a de Polignac number, because 212346077 - 2¹⁰ = 212345053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212346007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106173038 + 106173039.

It is an arithmetic number, because the mean of its divisors is an integer number (106173039).

Almost surely, 2^212346077 is an apocalyptic number.

It is an amenable number.

212346077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212346077 is an equidigital number, since it uses as much as digits as its factorization.

212346077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 212346077 is about 14572.0992653770. The cubic root of 212346077 is about 596.5974791901.

Adding to 212346077 its reverse (770643212), we get a palindrome (982989289).

The spelling of 212346077 in words is "two hundred twelve million, three hundred forty-six thousand, seventy-seven".