221202208 has 12 divisors (see below), whose sum is σ = 435491910. Its totient is φ = 110601088.

The previous prime is 221202203. The next prime is 221202211. The reversal of 221202208 is 802202122.

It can be written as a sum of positive squares in only one way, i.e., 202435984 + 18766224 = 14228^2 + 4332^2 .

It is not an unprimeable number, because it can be changed into a prime (221202203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456253 + ... + 3456316.

Almost surely, 2^221202208 is an apocalyptic number.

It is an amenable number.

221202208 is a deficient number, since it is larger than the sum of its proper divisors (214289702).

221202208 is an equidigital number, since it uses as much as digits as its factorization.

221202208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912579 (or 6912571 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 221202208 is about 14872.8681833734. The cubic root of 221202208 is about 604.7786982877.

The spelling of 221202208 in words is "two hundred twenty-one million, two hundred two thousand, two hundred eight".