212020267577 has 2 divisors, whose sum is σ = 212020267578. Its totient is φ = 212020267576.

The previous prime is 212020267573. The next prime is 212020267579. The reversal of 212020267577 is 775762020212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162168095401 + 49852172176 = 402701^2 + 223276^2 .

It is a cyclic number.

It is not a de Polignac number, because 212020267577 - 2² = 212020267573 is a prime.

Together with 212020267579, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212020267573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010133788 + 106010133789.

It is an arithmetic number, because the mean of its divisors is an integer number (106010133789).

Almost surely, 2^212020267577 is an apocalyptic number.

It is an amenable number.

212020267577 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020267577 is an equidigital number, since it uses as much as digits as its factorization.

212020267577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164640, while the sum is 41.

Adding to 212020267577 its reverse (775762020212), we get a palindrome (987782287789).

The spelling of 212020267577 in words is "two hundred twelve billion, twenty million, two hundred sixty-seven thousand, five hundred seventy-seven".