2221003 has 4 divisors (see below), whose sum is σ = 2224048. Its totient is φ = 2217960.

The previous prime is 2220979. The next prime is 2221007. The reversal of 2221003 is 3001222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2221003 - 2⁵ = 2220971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221007) 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, 298 + ... + 2128.

It is an arithmetic number, because the mean of its divisors is an integer number (556012).

2^2221003 is an apocalyptic number.

2221003 is a deficient number, since it is larger than the sum of its proper divisors (3045).

2221003 is a wasteful number, since it uses less digits than its factorization.

2221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2221003 is about 1490.3029893280. The cubic root of 2221003 is about 130.4717182049.

Adding to 2221003 its reverse (3001222), we get a palindrome (5222225).

It can be divided in two parts, 222 and 1003, that added together give a triangular number (1225 = T₄₉).

The spelling of 2221003 in words is "two million, two hundred twenty-one thousand, three".