2102281289 has 2 divisors, whose sum is σ = 2102281290. Its totient is φ = 2102281288.

The previous prime is 2102281261. The next prime is 2102281417. The reversal of 2102281289 is 9821822012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2090775625 + 11505664 = 45725^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102281289 - 2⁸ = 2102281033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102281219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051140644 + 1051140645.

It is an arithmetic number, because the mean of its divisors is an integer number (1051140645).

Almost surely, 2^2102281289 is an apocalyptic number.

It is an amenable number.

2102281289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102281289 is an equidigital number, since it uses as much as digits as its factorization.

2102281289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 2102281289 is about 45850.6410969356. The cubic root of 2102281289 is about 1281.0427068835.

The spelling of 2102281289 in words is "two billion, one hundred two million, two hundred eighty-one thousand, two hundred eighty-nine".