2011012189 has 2 divisors, whose sum is σ = 2011012190. Its totient is φ = 2011012188.

The previous prime is 2011012151. The next prime is 2011012207. The reversal of 2011012189 is 9812101102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1997196100 + 13816089 = 44690^2 + 3717^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011012189 - 2⁹ = 2011011677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011012489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005506094 + 1005506095.

It is an arithmetic number, because the mean of its divisors is an integer number (1005506095).

Almost surely, 2^2011012189 is an apocalyptic number.

It is an amenable number.

2011012189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011012189 is an equidigital number, since it uses as much as digits as its factorization.

2011012189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 2011012189 is about 44844.3105532909. The cubic root of 2011012189 is about 1262.2292334929.

The spelling of 2011012189 in words is "two billion, eleven million, twelve thousand, one hundred eighty-nine".