100221203 has 4 divisors (see below), whose sum is σ = 100259208. Its totient is φ = 100183200.

The previous prime is 100221193. The next prime is 100221211. The reversal of 100221203 is 302122001.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100221203 - 2⁶ = 100221139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221223) 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 in 3 ways as a sum of consecutive naturals, for example, 14726 + ... + 20427.

It is an arithmetic number, because the mean of its divisors is an integer number (25064802).

Almost surely, 2^100221203 is an apocalyptic number.

100221203 is a deficient number, since it is larger than the sum of its proper divisors (38005).

100221203 is an equidigital number, since it uses as much as digits as its factorization.

100221203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38004.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100221203 is about 10011.0540404095. The cubic root of 100221203 is about 464.5008757775.

Adding to 100221203 its reverse (302122001), we get a palindrome (402343204).

The spelling of 100221203 in words is "one hundred million, two hundred twenty-one thousand, two hundred three".