2102111140 has 24 divisors (see below), whose sum is σ = 4416004152. Its totient is φ = 840545280.

The previous prime is 2102111111. The next prime is 2102111161. The reversal of 2102111140 is 411112012.

It can be written as a sum of positive squares in 4 ways, for example, as 623401024 + 1478710116 = 24968^2 + 38454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2102111140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44052 + ... + 78388.

It is an arithmetic number, because the mean of its divisors is an integer number (184000173).

Almost surely, 2^2102111140 is an apocalyptic number.

2102111140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102111140 is an abundant number, since it is smaller than the sum of its proper divisors (2313893012).

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

2102111140 is a wasteful number, since it uses less digits than its factorization.

2102111140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37407 (or 37405 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2102111140 is about 45848.7855891516. The cubic root of 2102111140 is about 1281.0081453784.

Adding to 2102111140 its reverse (411112012), we get a palindrome (2513223152).

The spelling of 2102111140 in words is "two billion, one hundred two million, one hundred eleven thousand, one hundred forty".