221310420103 has 2 divisors, whose sum is σ = 221310420104. Its totient is φ = 221310420102.

The previous prime is 221310420073. The next prime is 221310420127. The reversal of 221310420103 is 301024013122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221310420103 - 2¹³ = 221310411911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221310420173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655210051 + 110655210052.

It is an arithmetic number, because the mean of its divisors is an integer number (110655210052).

Almost surely, 2^221310420103 is an apocalyptic number.

221310420103 is a deficient number, since it is larger than the sum of its proper divisors (1).

221310420103 is an equidigital number, since it uses as much as digits as its factorization.

221310420103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 221310420103 its reverse (301024013122), we get a palindrome (522334433225).

The spelling of 221310420103 in words is "two hundred twenty-one billion, three hundred ten million, four hundred twenty thousand, one hundred three".