12189371 has 2 divisors, whose sum is σ = 12189372. Its totient is φ = 12189370.

The previous prime is 12189349. The next prime is 12189439. The reversal of 12189371 is 17398121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12189371 - 2¹⁰ = 12188347 is a prime.

It is a super-3 number, since 3×12189371³ (a number of 22 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12189071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6094685 + 6094686.

It is an arithmetic number, because the mean of its divisors is an integer number (6094686).

Almost surely, 2^12189371 is an apocalyptic number.

12189371 is a deficient number, since it is larger than the sum of its proper divisors (1).

12189371 is an equidigital number, since it uses as much as digits as its factorization.

12189371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 32.

The square root of 12189371 is about 3491.3279708443. The cubic root of 12189371 is about 230.1408777762.

The spelling of 12189371 in words is "twelve million, one hundred eighty-nine thousand, three hundred seventy-one".