221342203 has 2 divisors, whose sum is σ = 221342204. Its totient is φ = 221342202.

The previous prime is 221342141. The next prime is 221342299. The reversal of 221342203 is 302243122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221342203 - 2⁹ = 221341691 is a prime.

It is not a weakly prime, because it can be changed into another prime (221348203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110671101 + 110671102.

It is an arithmetic number, because the mean of its divisors is an integer number (110671102).

Almost surely, 2^221342203 is an apocalyptic number.

221342203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221342203 is an equidigital number, since it uses as much as digits as its factorization.

221342203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 221342203 is about 14877.5738277449. The cubic root of 221342203 is about 604.9062559941.

Adding to 221342203 its reverse (302243122), we get a palindrome (523585325).

The spelling of 221342203 in words is "two hundred twenty-one million, three hundred forty-two thousand, two hundred three".