210116101 has 4 divisors (see below), whose sum is σ = 226278892. Its totient is φ = 193953312.

The previous prime is 210116029. The next prime is 210116161. The reversal of 210116101 is 101611012.

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 118243876 + 91872225 = 10874^2 + 9585^2 .

It is a cyclic number.

It is not a de Polignac number, because 210116101 - 2¹⁷ = 209985029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 16162777 = 210116101 / (2 + 1 + 0 + 1 + 1 + 6 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210116161) by changing a digit.

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, 8081376 + ... + 8081401.

It is an arithmetic number, because the mean of its divisors is an integer number (56569723).

Almost surely, 2^210116101 is an apocalyptic number.

It is an amenable number.

210116101 is a deficient number, since it is larger than the sum of its proper divisors (16162791).

210116101 is a wasteful number, since it uses less digits than its factorization.

210116101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16162790.

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

The square root of 210116101 is about 14495.3820577451. The cubic root of 210116101 is about 594.5017140296.

Adding to 210116101 its reverse (101611012), we get a palindrome (311727113).

The spelling of 210116101 in words is "two hundred ten million, one hundred sixteen thousand, one hundred one".