165212207 has 2 divisors, whose sum is σ = 165212208. Its totient is φ = 165212206.

The previous prime is 165212161. The next prime is 165212209. The reversal of 165212207 is 702212561.

It is a strong prime.

It is an emirp because it is prime and its reverse (702212561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165212207 - 2⁶ = 165212143 is a prime.

Together with 165212209, 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 (165212209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82606103 + 82606104.

It is an arithmetic number, because the mean of its divisors is an integer number (82606104).

Almost surely, 2^165212207 is an apocalyptic number.

165212207 is a deficient number, since it is larger than the sum of its proper divisors (1).

165212207 is an equidigital number, since it uses as much as digits as its factorization.

165212207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 165212207 is about 12853.4900707940. The cubic root of 165212207 is about 548.7156887239.

Adding to 165212207 its reverse (702212561), we get a palindrome (867424768).

The spelling of 165212207 in words is "one hundred sixty-five million, two hundred twelve thousand, two hundred seven".