212010111077 has 2 divisors, whose sum is σ = 212010111078. Its totient is φ = 212010111076.

The previous prime is 212010110927. The next prime is 212010111097. The reversal of 212010111077 is 770111010212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208415988676 + 3594122401 = 456526^2 + 59951^2 .

It is a cyclic number.

It is not a de Polignac number, because 212010111077 - 2¹⁴ = 212010094693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010111097) 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, 106005055538 + 106005055539.

It is an arithmetic number, because the mean of its divisors is an integer number (106005055539).

Almost surely, 2^212010111077 is an apocalyptic number.

It is an amenable number.

212010111077 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010111077 is an equidigital number, since it uses as much as digits as its factorization.

212010111077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 23.

Adding to 212010111077 its reverse (770111010212), we get a palindrome (982121121289).

The spelling of 212010111077 in words is "two hundred twelve billion, ten million, one hundred eleven thousand, seventy-seven".