2166101 has 8 divisors (see below), whose sum is σ = 2507520. Its totient is φ = 1832688.

The previous prime is 2166077. The next prime is 2166113. The reversal of 2166101 is 1016612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166101 - 2¹⁰ = 2165077 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (313440).

2^2166101 is an apocalyptic number.

It is an amenable number.

2166101 is a deficient number, since it is larger than the sum of its proper divisors (341419).

2166101 is an equidigital number, since it uses as much as digits as its factorization.

2166101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4003.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 2166101 is about 1471.7679844323. The cubic root of 2166101 is about 129.3876726056.

The spelling of 2166101 in words is "two million, one hundred sixty-six thousand, one hundred one".