2223191 has 4 divisors (see below), whose sum is σ = 2265192. Its totient is φ = 2181192.

The previous prime is 2223187. The next prime is 2223197. The reversal of 2223191 is 1913222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2223191 - 2² = 2223187 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 (2223197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20921 + ... + 21026.

It is an arithmetic number, because the mean of its divisors is an integer number (566298).

2^2223191 is an apocalyptic number.

2223191 is a deficient number, since it is larger than the sum of its proper divisors (42001).

2223191 is an equidigital number, since it uses as much as digits as its factorization.

2223191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42000.

The product of its digits is 216, while the sum is 20.

The square root of 2223191 is about 1491.0368875383. The cubic root of 2223191 is about 130.5145484678.

It can be divided in two parts, 22231 and 91, that added together give a palindrome (22322).

The spelling of 2223191 in words is "two million, two hundred twenty-three thousand, one hundred ninety-one".