212756515171 has 2 divisors, whose sum is σ = 212756515172. Its totient is φ = 212756515170.

The previous prime is 212756515151. The next prime is 212756515273. The reversal of 212756515171 is 171515657212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212756515171 - 2⁷ = 212756515043 is a prime.

It is not a weakly prime, because it can be changed into another prime (212756515151) 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, 106378257585 + 106378257586.

It is an arithmetic number, because the mean of its divisors is an integer number (106378257586).

Almost surely, 2^212756515171 is an apocalyptic number.

212756515171 is a deficient number, since it is larger than the sum of its proper divisors (1).

212756515171 is an equidigital number, since it uses as much as digits as its factorization.

212756515171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147000, while the sum is 43.

The spelling of 212756515171 in words is "two hundred twelve billion, seven hundred fifty-six million, five hundred fifteen thousand, one hundred seventy-one".