12242191 has 12 divisors (see below), whose sum is σ = 13399992. Its totient is φ = 11178336.

The previous prime is 12242189. The next prime is 12242201. The reversal of 12242191 is 19124221.

12242191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12242191 - 2¹ = 12242189 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 (12242161) 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, 17745 + ... + 18421.

It is an arithmetic number, because the mean of its divisors is an integer number (1116666).

Almost surely, 2^12242191 is an apocalyptic number.

12242191 is a deficient number, since it is larger than the sum of its proper divisors (1157801).

12242191 is a wasteful number, since it uses less digits than its factorization.

12242191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810 (or 797 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 12242191 is about 3498.8842507291. The cubic root of 12242191 is about 230.4728206574.

The spelling of 12242191 in words is "twelve million, two hundred forty-two thousand, one hundred ninety-one".