2102112011 has 4 divisors (see below), whose sum is σ = 2102954352. Its totient is φ = 2101269672.

The previous prime is 2102112007. The next prime is 2102112013. The reversal of 2102112011 is 1102112012.

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 2102112011 - 2² = 2102112007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102111983 and 2102112001.

It is not an unprimeable number, because it can be changed into a prime (2102112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417416 + ... + 422421.

It is an arithmetic number, because the mean of its divisors is an integer number (525738588).

Almost surely, 2^2102112011 is an apocalyptic number.

2102112011 is a deficient number, since it is larger than the sum of its proper divisors (842341).

2102112011 is an equidigital number, since it uses as much as digits as its factorization.

2102112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842340.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2102112011 is about 45848.7950877665. The cubic root of 2102112011 is about 1281.0083223050.

Adding to 2102112011 its reverse (1102112012), we get a palindrome (3204224023).

Subtracting from 2102112011 its reverse (1102112012), we obtain a palindrome (999999999).

The spelling of 2102112011 in words is "two billion, one hundred two million, one hundred twelve thousand, eleven".