2102111211 has 8 divisors (see below), whose sum is σ = 2808870400. Its totient is φ = 1398379752.

The previous prime is 2102111191. The next prime is 2102111267. The reversal of 2102111211 is 1121112012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2102111211 - 2⁷ = 2102111083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102111111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755311 + ... + 758088.

It is an arithmetic number, because the mean of its divisors is an integer number (351108800).

Almost surely, 2^2102111211 is an apocalyptic number.

2102111211 is a deficient number, since it is larger than the sum of its proper divisors (706759189).

2102111211 is a wasteful number, since it uses less digits than its factorization.

2102111211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1513865.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2102111211 is about 45848.7863634361. The cubic root of 2102111211 is about 1281.0081598007.

Adding to 2102111211 its reverse (1121112012), we get a palindrome (3223223223).

The spelling of 2102111211 in words is "two billion, one hundred two million, one hundred eleven thousand, two hundred eleven".