221321204103 has 8 divisors (see below), whose sum is σ = 312453464688. Its totient is φ = 138868206464.

The previous prime is 221321204101. The next prime is 221321204107. The reversal of 221321204103 is 301402123122.

221321204103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 221321204103 - 2¹ = 221321204101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221321204103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221321204101) 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, 2169815676 + ... + 2169815777.

It is an arithmetic number, because the mean of its divisors is an integer number (39056683086).

Almost surely, 2^221321204103 is an apocalyptic number.

221321204103 is a deficient number, since it is larger than the sum of its proper divisors (91132260585).

221321204103 is a wasteful number, since it uses less digits than its factorization.

221321204103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4339631473.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 221321204103 its reverse (301402123122), we get a palindrome (522723327225).

The spelling of 221321204103 in words is "two hundred twenty-one billion, three hundred twenty-one million, two hundred four thousand, one hundred three".