21222323103 has 16 divisors (see below), whose sum is σ = 28429581440. Its totient is φ = 14081757984.

The previous prime is 21222323081. The next prime is 21222323119. The reversal of 21222323103 is 30132322212.

It is a happy number.

It is not a de Polignac number, because 21222323103 - 2¹⁴ = 21222306719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222323103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222303103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 735513 + ... + 763821.

It is an arithmetic number, because the mean of its divisors is an integer number (1776848840).

Almost surely, 2^21222323103 is an apocalyptic number.

21222323103 is a deficient number, since it is larger than the sum of its proper divisors (7207258337).

21222323103 is a wasteful number, since it uses less digits than its factorization.

21222323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29478.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21222323103 its reverse (30132322212), we get a palindrome (51354645315).

The spelling of 21222323103 in words is "twenty-one billion, two hundred twenty-two million, three hundred twenty-three thousand, one hundred three".