2126811 has 4 divisors (see below), whose sum is σ = 2835752. Its totient is φ = 1417872.

The previous prime is 2126809. The next prime is 2126827. The reversal of 2126811 is 1186212.

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

It is not a de Polignac number, because 2126811 - 2¹ = 2126809 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2126801) 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, 354466 + ... + 354471.

It is an arithmetic number, because the mean of its divisors is an integer number (708938).

2^2126811 is an apocalyptic number.

2126811 is a deficient number, since it is larger than the sum of its proper divisors (708941).

2126811 is an equidigital number, since it uses as much as digits as its factorization.

2126811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708940.

The product of its digits is 192, while the sum is 21.

The square root of 2126811 is about 1458.3590092978. The cubic root of 2126811 is about 128.6005914447.

The spelling of 2126811 in words is "two million, one hundred twenty-six thousand, eight hundred eleven".