2102111011 has 16 divisors (see below), whose sum is σ = 2822416128. Its totient is φ = 1512007200.

The previous prime is 2102111009. The next prime is 2102111017. The reversal of 2102111011 is 1101112012.

It is not a de Polignac number, because 2102111011 - 2¹ = 2102111009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2102111017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049005 + ... + 1051006.

It is an arithmetic number, because the mean of its divisors is an integer number (176401008).

Almost surely, 2^2102111011 is an apocalyptic number.

2102111011 is a deficient number, since it is larger than the sum of its proper divisors (720305117).

2102111011 is a wasteful number, since it uses less digits than its factorization.

2102111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100042.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 2102111011 is about 45848.7841823532. The cubic root of 2102111011 is about 1281.0081191746.

Adding to 2102111011 its reverse (1101112012), we get a palindrome (3203223023).

The spelling of 2102111011 in words is "two billion, one hundred two million, one hundred eleven thousand, eleven".