2101166 has 16 divisors (see below), whose sum is σ = 3453840. Its totient is φ = 954240.

The previous prime is 2101157. The next prime is 2101181. The reversal of 2101166 is 6611012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80 + ... + 2051.

It is an arithmetic number, because the mean of its divisors is an integer number (215865).

2^2101166 is an apocalyptic number.

2101166 is a deficient number, since it is larger than the sum of its proper divisors (1352674).

2101166 is a wasteful number, since it uses less digits than its factorization.

2101166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

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

The square root of 2101166 is about 1449.5399270113. The cubic root of 2101166 is about 128.0816129914.

Adding to 2101166 its reverse (6611012), we get a palindrome (8712178).

The spelling of 2101166 in words is "two million, one hundred one thousand, one hundred sixty-six".