2102111000 has 256 divisors, whose sum is σ = 5660928000. Its totient is φ = 723840000.

The previous prime is 2102110949. The next prime is 2102111009. The reversal of 2102111000 is 1112012.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102111009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26608961 + ... + 26609039.

It is an arithmetic number, because the mean of its divisors is an integer number (22113000).

Almost surely, 2^2102111000 is an apocalyptic number.

2102111000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102111000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2830464000).

2102111000 is an abundant number, since it is smaller than the sum of its proper divisors (3558817000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102111000 is a wasteful number, since it uses less digits than its factorization.

2102111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2102111000 is about 45848.7840623936. The cubic root of 2102111000 is about 1281.0081169402.

Adding to 2102111000 its reverse (1112012), we get a palindrome (2103223012).

The spelling of 2102111000 in words is "two billion, one hundred two million, one hundred eleven thousand".