21222332103 has 16 divisors (see below), whose sum is σ = 32492062976. Its totient is φ = 12069570240.

The previous prime is 21222332099. The next prime is 21222332119. The reversal of 21222332103 is 30123322212.

It is a happy number.

It is not a de Polignac number, because 21222332103 - 2² = 21222332099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 21222332103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222332003) 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 15 ways as a sum of consecutive naturals, for example, 2390326 + ... + 2399187.

It is an arithmetic number, because the mean of its divisors is an integer number (2030753936).

Almost surely, 2^21222332103 is an apocalyptic number.

21222332103 is a deficient number, since it is larger than the sum of its proper divisors (11269730873).

21222332103 is a wasteful number, since it uses less digits than its factorization.

21222332103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4789734.

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

Adding to 21222332103 its reverse (30123322212), we get a palindrome (51345654315).

The spelling of 21222332103 in words is "twenty-one billion, two hundred twenty-two million, three hundred thirty-two thousand, one hundred three".