100303221 has 8 divisors (see below), whose sum is σ = 135733984. Its totient is φ = 65870640.

The previous prime is 100303211. The next prime is 100303237. The reversal of 100303221 is 122303001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100303221 - 2⁶ = 100303157 is a prime.

It is a super-2 number, since 2×100303221² = 20121472285949682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100303197 and 100303206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100303211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249310 + ... + 249711.

It is an arithmetic number, because the mean of its divisors is an integer number (16966748).

Almost surely, 2^100303221 is an apocalyptic number.

It is an amenable number.

100303221 is a deficient number, since it is larger than the sum of its proper divisors (35430763).

100303221 is an equidigital number, since it uses as much as digits as its factorization.

100303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499091.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 100303221 is about 10015.1495745196. The cubic root of 100303221 is about 464.6275523816.

Adding to 100303221 its reverse (122303001), we get a palindrome (222606222).

The spelling of 100303221 in words is "one hundred million, three hundred three thousand, two hundred twenty-one".