2221423 has 8 divisors (see below), whose sum is σ = 2393600. Its totient is φ = 2054808.

The previous prime is 2221411. The next prime is 2221433. The reversal of 2221423 is 3241222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2221423 - 2⁵ = 2221391 is a prime.

It is an Ulam number.

It is a Duffinian number.

2221423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2221397 and 2221406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543 + ... + 2176.

It is an arithmetic number, because the mean of its divisors is an integer number (299200).

2^2221423 is an apocalyptic number.

2221423 is a deficient number, since it is larger than the sum of its proper divisors (172177).

2221423 is a wasteful number, since it uses less digits than its factorization.

2221423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781.

The product of its digits is 192, while the sum is 16.

The square root of 2221423 is about 1490.4438936102. The cubic root of 2221423 is about 130.4799419170.

Adding to 2221423 its reverse (3241222), we get a palindrome (5462645).

The spelling of 2221423 in words is "two million, two hundred twenty-one thousand, four hundred twenty-three".