12011189 has 2 divisors, whose sum is σ = 12011190. Its totient is φ = 12011188.

The previous prime is 12011183. The next prime is 12011203. The reversal of 12011189 is 98111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10510564 + 1500625 = 3242^2 + 1225^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011189 - 2¹⁶ = 11945653 is a prime.

It is a super-2 number, since 2×12011189² = 288537322387442, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005594 + 6005595.

It is an arithmetic number, because the mean of its divisors is an integer number (6005595).

Almost surely, 2^12011189 is an apocalyptic number.

It is an amenable number.

12011189 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011189 is an equidigital number, since it uses as much as digits as its factorization.

12011189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 12011189 is about 3465.7162318920. The cubic root of 12011189 is about 229.0139831154.

The spelling of 12011189 in words is "twelve million, eleven thousand, one hundred eighty-nine".