2108881 has 2 divisors, whose sum is σ = 2108882. Its totient is φ = 2108880.

The previous prime is 2108879. The next prime is 2108927. The reversal of 2108881 is 1888012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2076481 + 32400 = 1441^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 2108881 - 2¹ = 2108879 is a prime.

It is a super-2 number, since 2×2108881² = 8894758144322, which contains 22 as substring.

Together with 2108879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2108081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054440 + 1054441.

It is an arithmetic number, because the mean of its divisors is an integer number (1054441).

2^2108881 is an apocalyptic number.

It is an amenable number.

2108881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108881 is an equidigital number, since it uses as much as digits as its factorization.

2108881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 2108881 is about 1452.1986778675. The cubic root of 2108881 is about 128.2381836266.

The spelling of 2108881 in words is "two million, one hundred eight thousand, eight hundred eighty-one".