21022210003 has 4 divisors (see below), whose sum is σ = 21026823688. Its totient is φ = 21017596320.

The previous prime is 21022209991. The next prime is 21022210007. The reversal of 21022210003 is 30001222012.

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 21022210003 - 2³³ = 12432275411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022210007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300001 + ... + 2309122.

It is an arithmetic number, because the mean of its divisors is an integer number (5256705922).

Almost surely, 2^21022210003 is an apocalyptic number.

21022210003 is a deficient number, since it is larger than the sum of its proper divisors (4613685).

21022210003 is an equidigital number, since it uses as much as digits as its factorization.

21022210003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4613684.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21022210003 its reverse (30001222012), we get a palindrome (51023432015).

The spelling of 21022210003 in words is "twenty-one billion, twenty-two million, two hundred ten thousand, three".