102011165 has 4 divisors (see below), whose sum is σ = 122413404. Its totient is φ = 81608928.

The previous prime is 102011113. The next prime is 102011191. The reversal of 102011165 is 561110201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19909444 + 82101721 = 4462^2 + 9061^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011165 - 2¹² = 102007069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10201112 + ... + 10201121.

It is an arithmetic number, because the mean of its divisors is an integer number (30603351).

Almost surely, 2^102011165 is an apocalyptic number.

It is an amenable number.

102011165 is a deficient number, since it is larger than the sum of its proper divisors (20402239).

102011165 is an equidigital number, since it uses as much as digits as its factorization.

102011165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20402238.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 102011165 is about 10100.0576731027. The cubic root of 102011165 is about 467.2499201058.

Adding to 102011165 its reverse (561110201), we get a palindrome (663121366).

The spelling of 102011165 in words is "one hundred two million, eleven thousand, one hundred sixty-five".