2102011 has 4 divisors (see below), whose sum is σ = 2106232. Its totient is φ = 2097792.

The previous prime is 2101961. The next prime is 2102021. The reversal of 2102011 is 1102012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102011 - 2⁹ = 2101499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2101985 and 2102003.

It is not an unprimeable number, because it can be changed into a prime (2102021) 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, 1245 + ... + 2398.

It is an arithmetic number, because the mean of its divisors is an integer number (526558).

2^2102011 is an apocalyptic number.

2102011 is a deficient number, since it is larger than the sum of its proper divisors (4221).

2102011 is an equidigital number, since it uses as much as digits as its factorization.

2102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4220.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 2102011 is about 1449.8313695047. The cubic root of 2102011 is about 128.0987803575.

Adding to 2102011 its reverse (1102012), we get a palindrome (3204023).

Subtracting from 2102011 its reverse (1102012), we obtain a palindrome (999999).

The spelling of 2102011 in words is "two million, one hundred two thousand, eleven".