2221903 has 4 divisors (see below), whose sum is σ = 2233728. Its totient is φ = 2210080.

The previous prime is 2221889. The next prime is 2221907. The reversal of 2221903 is 3091222.

It is a happy number.

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 2221903 - 2⁵ = 2221871 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 (2221907) 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 3 ways as a sum of consecutive naturals, for example, 5626 + ... + 6007.

It is an arithmetic number, because the mean of its divisors is an integer number (558432).

2^2221903 is an apocalyptic number.

2221903 is a deficient number, since it is larger than the sum of its proper divisors (11825).

2221903 is a wasteful number, since it uses less digits than its factorization.

2221903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2221903 is about 1490.6049107661. The cubic root of 2221903 is about 130.4893391760.

The spelling of 2221903 in words is "two million, two hundred twenty-one thousand, nine hundred three".