2210881 has 2 divisors, whose sum is σ = 2210882. Its totient is φ = 2210880.

The previous prime is 2210851. The next prime is 2210891. The reversal of 2210881 is 1880122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2016400 + 194481 = 1420^2 + 441^2 .

It is a cyclic number.

It is not a de Polignac number, because 2210881 - 2¹⁹ = 1686593 is a prime.

It is a super-2 number, since 2×2210881² = 9775989592322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2210801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105440 + 1105441.

It is an arithmetic number, because the mean of its divisors is an integer number (1105441).

2^2210881 is an apocalyptic number.

It is an amenable number.

2210881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2210881 is an equidigital number, since it uses as much as digits as its factorization.

2210881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2210881 is about 1486.9031575728. The cubic root of 2210881 is about 130.2732123876.

The spelling of 2210881 in words is "two million, two hundred ten thousand, eight hundred eighty-one".