2101288885 has 8 divisors (see below), whose sum is σ = 2527538616. Its totient is φ = 1677036480.

The previous prime is 2101288883. The next prime is 2101288939. The reversal of 2101288885 is 5888821012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 133656721 + 1967632164 = 11561^2 + 44358^2 .

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

It is not a de Polignac number, because 2101288885 - 2¹ = 2101288883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101288883) 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, 497014 + ... + 501223.

It is an arithmetic number, because the mean of its divisors is an integer number (315942327).

Almost surely, 2^2101288885 is an apocalyptic number.

It is an amenable number.

2101288885 is a deficient number, since it is larger than the sum of its proper divisors (426249731).

2101288885 is an equidigital number, since it uses as much as digits as its factorization.

2101288885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998663.

The product of its (nonzero) digits is 81920, while the sum is 43.

The square root of 2101288885 is about 45839.8176807020. The cubic root of 2101288885 is about 1280.8410985940.

The spelling of 2101288885 in words is "two billion, one hundred one million, two hundred eighty-eight thousand, eight hundred eighty-five".