22002003 has 8 divisors (see below), whose sum is σ = 32595600. Its totient is φ = 14667984.

The previous prime is 22001999. The next prime is 22002011. The reversal of 22002003 is 30020022.

It is not a de Polignac number, because 22002003 - 2² = 22001999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22002023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407418 + ... + 407471.

It is an arithmetic number, because the mean of its divisors is an integer number (4074450).

Almost surely, 2^22002003 is an apocalyptic number.

22002003 is a deficient number, since it is larger than the sum of its proper divisors (10593597).

22002003 is an equidigital number, since it uses as much as digits as its factorization.

22002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814898 (or 814892 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 22002003 is about 4690.6292754811. The cubic root of 22002003 is about 280.2124365723.

Adding to 22002003 its reverse (30020022), we get a palindrome (52022025).

The spelling of 22002003 in words is "twenty-two million, two thousand, three".