2101285 has 16 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 1551616.

The previous prime is 2101283. The next prime is 2101313. The reversal of 2101285 is 5821012.

It is a cyclic number.

It is not a de Polignac number, because 2101285 - 2¹ = 2101283 is a prime.

2101285 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4806 + ... + 5224.

It is an arithmetic number, because the mean of its divisors is an integer number (170100).

2^2101285 is an apocalyptic number.

It is an amenable number.

2101285 is a deficient number, since it is larger than the sum of its proper divisors (620315).

2101285 is a wasteful number, since it uses less digits than its factorization.

With its successor (2101286) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (500).

2101285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2101285 is about 1449.5809739370. The cubic root of 2101285 is about 128.0840309226.

Adding to 2101285 its reverse (5821012), we get a palindrome (7922297).

The spelling of 2101285 in words is "two million, one hundred one thousand, two hundred eighty-five".