2105127108 has 72 divisors (see below), whose sum is σ = 6129457152. Its totient is φ = 596719872.

The previous prime is 2105127107. The next prime is 2105127109. The reversal of 2105127108 is 8017215012.

It is an interprime number because it is at equal distance from previous prime (2105127107) and next prime (2105127109).

It is not an unprimeable number, because it can be changed into a prime (2105127107) 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 23 ways as a sum of consecutive naturals, for example, 885 + ... + 64892.

Almost surely, 2^2105127108 is an apocalyptic number.

2105127108 is a gapful number since it is divisible by the number (28) 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 2105127108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3064728576).

2105127108 is an abundant number, since it is smaller than the sum of its proper divisors (4024330044).

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

2105127108 is a wasteful number, since it uses less digits than its factorization.

2105127108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65921 (or 65916 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 2105127108 is about 45881.6641808032. The cubic root of 2105127108 is about 1281.6204874640.

The spelling of 2105127108 in words is "two billion, one hundred five million, one hundred twenty-seven thousand, one hundred eight".