102101161 has 4 divisors (see below), whose sum is σ = 104027652. Its totient is φ = 100174672.

The previous prime is 102101159. The next prime is 102101171. The reversal of 102101161 is 161101201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161101201 = 71 ⋅2269031.

It can be written as a sum of positive squares in 2 ways, for example, as 47059600 + 55041561 = 6860^2 + 7419^2 .

It is a cyclic number.

It is not a de Polignac number, because 102101161 - 2¹ = 102101159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102101171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963166 + ... + 963271.

It is an arithmetic number, because the mean of its divisors is an integer number (26006913).

Almost surely, 2^102101161 is an apocalyptic number.

It is an amenable number.

102101161 is a deficient number, since it is larger than the sum of its proper divisors (1926491).

102101161 is an equidigital number, since it uses as much as digits as its factorization.

102101161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926490.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 102101161 is about 10104.5119130020. The cubic root of 102101161 is about 467.3872850172.

Adding to 102101161 its reverse (161101201), we get a palindrome (263202362).

The spelling of 102101161 in words is "one hundred two million, one hundred one thousand, one hundred sixty-one".