165101011 has 2 divisors, whose sum is σ = 165101012. Its totient is φ = 165101010.

The previous prime is 165100979. The next prime is 165101021. The reversal of 165101011 is 110101561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165101011 - 2⁵ = 165100979 is a prime.

It is not a weakly prime, because it can be changed into another prime (165101021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82550505 + 82550506.

It is an arithmetic number, because the mean of its divisors is an integer number (82550506).

Almost surely, 2^165101011 is an apocalyptic number.

165101011 is a deficient number, since it is larger than the sum of its proper divisors (1).

165101011 is an equidigital number, since it uses as much as digits as its factorization.

165101011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 165101011 is about 12849.1638249343. The cubic root of 165101011 is about 548.5925568144.

Adding to 165101011 its reverse (110101561), we get a palindrome (275202572).

The spelling of 165101011 in words is "one hundred sixty-five million, one hundred one thousand, eleven".