21222210003 has 8 divisors (see below), whose sum is σ = 28423170048. Its totient is φ = 14084694984.

The previous prime is 21222209959. The next prime is 21222210011. The reversal of 21222210003 is 30001222212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21222210003 - 2⁸ = 21222209747 is a prime.

It is a super-2 number, since 2×21222210003² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21222210803) 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 7 ways as a sum of consecutive naturals, for example, 15860475 + ... + 15861812.

It is an arithmetic number, because the mean of its divisors is an integer number (3552896256).

Almost surely, 2^21222210003 is an apocalyptic number.

21222210003 is a deficient number, since it is larger than the sum of its proper divisors (7200960045).

21222210003 is a wasteful number, since it uses less digits than its factorization.

21222210003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31722513.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21222210003 its reverse (30001222212), we get a palindrome (51223432215).

The spelling of 21222210003 in words is "twenty-one billion, two hundred twenty-two million, two hundred ten thousand, three".