2102771 has 4 divisors (see below), whose sum is σ = 2293944. Its totient is φ = 1911600.

The previous prime is 2102759. The next prime is 2102777. The reversal of 2102771 is 1772012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2102771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95570 + ... + 95591.

It is an arithmetic number, because the mean of its divisors is an integer number (573486).

2^2102771 is an apocalyptic number.

2102771 is a deficient number, since it is larger than the sum of its proper divisors (191173).

2102771 is a wasteful number, since it uses less digits than its factorization.

2102771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191172.

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 2102771 is about 1450.0934452648. The cubic root of 2102771 is about 128.1142168994.

Adding to 2102771 its reverse (1772012), we get a palindrome (3874783).

The spelling of 2102771 in words is "two million, one hundred two thousand, seven hundred seventy-one".