212202044477 has 2 divisors, whose sum is σ = 212202044478. Its totient is φ = 212202044476.

The previous prime is 212202044443. The next prime is 212202044479. The reversal of 212202044477 is 774440202212.

212202044477 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159791268121 + 52410776356 = 399739^2 + 228934^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202044477 - 2⁶ = 212202044413 is a prime.

Together with 212202044479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212202044479) 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, 106101022238 + 106101022239.

It is an arithmetic number, because the mean of its divisors is an integer number (106101022239).

Almost surely, 2^212202044477 is an apocalyptic number.

It is an amenable number.

212202044477 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202044477 is an equidigital number, since it uses as much as digits as its factorization.

212202044477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50176, while the sum is 35.

Adding to 212202044477 its reverse (774440202212), we get a palindrome (986642246689).

The spelling of 212202044477 in words is "two hundred twelve billion, two hundred two million, forty-four thousand, four hundred seventy-seven".