221122221103 has 16 divisors (see below), whose sum is σ = 269378944000. Its totient is φ = 177285000672.

The previous prime is 221122221091. The next prime is 221122221113. The reversal of 221122221103 is 301122221122.

It is a cyclic number.

It is not a de Polignac number, because 221122221103 - 2⁵ = 221122221071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122221113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10512108 + ... + 10533121.

It is an arithmetic number, because the mean of its divisors is an integer number (16836184000).

Almost surely, 2^221122221103 is an apocalyptic number.

221122221103 is a deficient number, since it is larger than the sum of its proper divisors (48256722897).

221122221103 is a wasteful number, since it uses less digits than its factorization.

221122221103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21045334.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 221122221103 its sum of digits (19), we get a palindrome (221122221122).

Adding to 221122221103 its reverse (301122221122), we get a palindrome (522244442225).

It can be divided in two parts, 221122 and 221103, that added together give a square (442225 = 665²).

The spelling of 221122221103 in words is "two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred three".