100433221 has 8 divisors (see below), whose sum is σ = 120822080. Its totient is φ = 81554688.

The previous prime is 100433213. The next prime is 100433233. The reversal of 100433221 is 122334001.

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 100433221 - 2³ = 100433213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100433195 and 100433204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100433321) 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 7 ways as a sum of consecutive naturals, for example, 377436 + ... + 377701.

It is an arithmetic number, because the mean of its divisors is an integer number (15102760).

Almost surely, 2^100433221 is an apocalyptic number.

It is an amenable number.

100433221 is a deficient number, since it is larger than the sum of its proper divisors (20388859).

100433221 is an equidigital number, since it uses as much as digits as its factorization.

100433221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755163.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 100433221 is about 10021.6376406254. The cubic root of 100433221 is about 464.8281956746.

Adding to 100433221 its reverse (122334001), we get a palindrome (222767222).

It can be divided in two parts, 1004 and 33221, that added together give a square (34225 = 185²).

The spelling of 100433221 in words is "one hundred million, four hundred thirty-three thousand, two hundred twenty-one".