221222203 has 2 divisors, whose sum is σ = 221222204. Its totient is φ = 221222202.

The previous prime is 221222191. The next prime is 221222213. The reversal of 221222203 is 302222122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221222203 - 2²¹ = 219125051 is a prime.

It is not a weakly prime, because it can be changed into another prime (221222213) 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, 110611101 + 110611102.

It is an arithmetic number, because the mean of its divisors is an integer number (110611102).

Almost surely, 2^221222203 is an apocalyptic number.

221222203 is a deficient number, since it is larger than the sum of its proper divisors (1).

221222203 is an equidigital number, since it uses as much as digits as its factorization.

221222203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 221222203 is about 14873.5403653602. The cubic root of 221222203 is about 604.7969202060.

Adding to 221222203 its reverse (302222122), we get a palindrome (523444325).

The spelling of 221222203 in words is "two hundred twenty-one million, two hundred twenty-two thousand, two hundred three".