2111285689 has 2 divisors, whose sum is σ = 2111285690. Its totient is φ = 2111285688.

The previous prime is 2111285669. The next prime is 2111285707. The reversal of 2111285689 is 9865821112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2086205625 + 25080064 = 45675^2 + 5008^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111285689 - 2⁹ = 2111285177 is a prime.

It is a super-3 number, since 3×2111285689³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2111285669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055642844 + 1055642845.

It is an arithmetic number, because the mean of its divisors is an integer number (1055642845).

Almost surely, 2^2111285689 is an apocalyptic number.

It is an amenable number.

2111285689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111285689 is an equidigital number, since it uses as much as digits as its factorization.

2111285689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 43.

The square root of 2111285689 is about 45948.7289160429. The cubic root of 2111285689 is about 1282.8690706721.

The spelling of 2111285689 in words is "two billion, one hundred eleven million, two hundred eighty-five thousand, six hundred eighty-nine".