21223001103 has 8 divisors (see below), whose sum is σ = 28300090368. Its totient is φ = 14147289624.

The previous prime is 21223001089. The next prime is 21223001123. The reversal of 21223001103 is 30110032212.

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

It is not a de Polignac number, because 21223001103 - 2²⁴ = 21206223887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223001123) 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, 307951 + ... + 370512.

It is an arithmetic number, because the mean of its divisors is an integer number (3537511296).

Almost surely, 2^21223001103 is an apocalyptic number.

21223001103 is a deficient number, since it is larger than the sum of its proper divisors (7077089265).

21223001103 is a wasteful number, since it uses less digits than its factorization.

21223001103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688893.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21223001103 its reverse (30110032212), we get a palindrome (51333033315).

The spelling of 21223001103 in words is "twenty-one billion, two hundred twenty-three million, one thousand, one hundred three".