12065191 has 6 divisors (see below), whose sum is σ = 12167376. Its totient is φ = 11963700.

The previous prime is 12065173. The next prime is 12065197. The reversal of 12065191 is 19156021.

12065191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12065191 - 2⁷ = 12065063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12065197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44386 + ... + 44656.

It is an arithmetic number, because the mean of its divisors is an integer number (2027896).

Almost surely, 2^12065191 is an apocalyptic number.

12065191 is a deficient number, since it is larger than the sum of its proper divisors (102185).

12065191 is an frugal number, since it uses more digits than its factorization.

12065191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 482 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 12065191 is about 3473.4983805956. The cubic root of 12065191 is about 229.3566837159.

The spelling of 12065191 in words is "twelve million, sixty-five thousand, one hundred ninety-one".