12022191 has 12 divisors (see below), whose sum is σ = 17395560. Its totient is φ = 8000880.

The previous prime is 12022181. The next prime is 12022223. The reversal of 12022191 is 19122021.

It is not a de Polignac number, because 12022191 - 2⁵ = 12022159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022181) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8920 + ... + 10178.

It is an arithmetic number, because the mean of its divisors is an integer number (1449630).

Almost surely, 2^12022191 is an apocalyptic number.

12022191 is a deficient number, since it is larger than the sum of its proper divisors (5373369).

12022191 is a wasteful number, since it uses less digits than its factorization.

12022191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326 (or 2323 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 12022191 is about 3467.3031306766. The cubic root of 12022191 is about 229.0838857962.

The spelling of 12022191 in words is "twelve million, twenty-two thousand, one hundred ninety-one".