2100771 has 6 divisors (see below), whose sum is σ = 3034460. Its totient is φ = 1400508.

The previous prime is 2100743. The next prime is 2100781. The reversal of 2100771 is 1770012.

It is not a de Polignac number, because 2100771 - 2¹⁷ = 1969699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 116701 + ... + 116718.

2^2100771 is an apocalyptic number.

2100771 is a deficient number, since it is larger than the sum of its proper divisors (933689).

2100771 is a wasteful number, since it uses less digits than its factorization.

2100771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233425 (or 233422 counting only the distinct ones).

The product of its (nonzero) digits is 98, while the sum is 18.

The square root of 2100771 is about 1449.4036704797. The cubic root of 2100771 is about 128.0735864310.

Adding to 2100771 its reverse (1770012), we get a palindrome (3870783).

It can be divided in two parts, 2100 and 771, that multiplied together give a triangular number (1619100 = T₁₇₉₉).

The spelling of 2100771 in words is "two million, one hundred thousand, seven hundred seventy-one".