221202343 has 6 divisors (see below), whose sum is σ = 229093904. Its totient is φ = 213573864.

The previous prime is 221202341. The next prime is 221202347. The reversal of 221202343 is 343202122.

It is not a de Polignac number, because 221202343 - 2¹ = 221202341 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221202343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202341) 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 in 5 ways as a sum of consecutive naturals, for example, 130671 + ... + 132352.

Almost surely, 2^221202343 is an apocalyptic number.

221202343 is a deficient number, since it is larger than the sum of its proper divisors (7891561).

221202343 is an equidigital number, since it uses as much as digits as its factorization.

221202343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263081 (or 263052 counting only the distinct ones).

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

The square root of 221202343 is about 14872.8727218382. The cubic root of 221202343 is about 604.7788213200.

Adding to 221202343 its reverse (343202122), we get a palindrome (564404465).

The spelling of 221202343 in words is "two hundred twenty-one million, two hundred two thousand, three hundred forty-three".