100221344 has 12 divisors (see below), whose sum is σ = 197310834. Its totient is φ = 50110656.

The previous prime is 100221323. The next prime is 100221367. The reversal of 100221344 is 443122001.

It can be written as a sum of positive squares in only one way, i.e., 99600400 + 620944 = 9980^2 + 788^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565927 + ... + 1565990.

Almost surely, 2^100221344 is an apocalyptic number.

It is an amenable number.

100221344 is a deficient number, since it is larger than the sum of its proper divisors (97089490).

100221344 is an equidigital number, since it uses as much as digits as its factorization.

100221344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131927 (or 3131919 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 100221344 is about 10011.0610826226. The cubic root of 100221344 is about 464.5010936110.

Adding to 100221344 its reverse (443122001), we get a palindrome (543343345).

The spelling of 100221344 in words is "one hundred million, two hundred twenty-one thousand, three hundred forty-four".