2233221 has 4 divisors (see below), whose sum is σ = 2977632. Its totient is φ = 1488812.
The previous prime is 2233213. The next prime is 2233223. The reversal of 2233221 is 1223322.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 2233221 - 23 = 2233213 is a prime.
It is a d-powerful number, because it can be written as 25 + 211 + 36 + 37 + 217 + 221 + 1 .
It is a D-number.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 2233221.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2233223) 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, 372201 + ... + 372206.
It is an arithmetic number, because the mean of its divisors is an integer number (744408).
22233221 is an apocalyptic number.
It is an amenable number.
2233221 is a deficient number, since it is larger than the sum of its proper divisors (744411).
2233221 is an equidigital number, since it uses as much as digits as its factorization.
2233221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 744410.
The product of its digits is 144, while the sum is 15.
The square root of 2233221 is about 1494.3965337219. The cubic root of 2233221 is about 130.7105276132.
Adding to 2233221 its reverse (1223322), we get a palindrome (3456543).
The spelling of 2233221 in words is "two million, two hundred thirty-three thousand, two hundred twenty-one".
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