212066071 has 12 divisors (see below), whose sum is σ = 254648640. Its totient is φ = 175906080.

The previous prime is 212066069. The next prime is 212066081. The reversal of 212066071 is 170660212.

It is not a de Polignac number, because 212066071 - 2¹ = 212066069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212066051) 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 in 11 ways as a sum of consecutive naturals, for example, 68286 + ... + 71323.

It is an arithmetic number, because the mean of its divisors is an integer number (21220720).

Almost surely, 2^212066071 is an apocalyptic number.

212066071 is a deficient number, since it is larger than the sum of its proper divisors (42582569).

212066071 is a wasteful number, since it uses less digits than its factorization.

212066071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139654 (or 139647 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 212066071 is about 14562.4884892658. The cubic root of 212066071 is about 596.3351333126.

The spelling of 212066071 in words is "two hundred twelve million, sixty-six thousand, seventy-one".