21222302003 has 4 divisors (see below), whose sum is σ = 24254059440. Its totient is φ = 18190544568.

The previous prime is 21222301999. The next prime is 21222302033. The reversal of 21222302003 is 30020322212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21222302003 - 2² = 21222301999 is a prime.

It is a super-2 number, since 2×21222302003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222302033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515878708 + ... + 1515878721.

It is an arithmetic number, because the mean of its divisors is an integer number (6063514860).

Almost surely, 2^21222302003 is an apocalyptic number.

21222302003 is a deficient number, since it is larger than the sum of its proper divisors (3031757437).

21222302003 is an equidigital number, since it uses as much as digits as its factorization.

21222302003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3031757436.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21222302003 its reverse (30020322212), we get a palindrome (51242624215).

The spelling of 21222302003 in words is "twenty-one billion, two hundred twenty-two million, three hundred two thousand, three".