100320221 has 8 divisors (see below), whose sum is σ = 102051840. Its totient is φ = 98603568.

The previous prime is 100320211. The next prime is 100320257. The reversal of 100320221 is 122023001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 100320221 - 2²² = 96125917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100320211) 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, 10220 + ... + 17466.

It is an arithmetic number, because the mean of its divisors is an integer number (12756480).

Almost surely, 2^100320221 is an apocalyptic number.

It is an amenable number.

100320221 is a deficient number, since it is larger than the sum of its proper divisors (1731619).

100320221 is a wasteful number, since it uses less digits than its factorization.

100320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483.

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

The square root of 100320221 is about 10015.9982527954. The cubic root of 100320221 is about 464.6538002000.

Adding to 100320221 its reverse (122023001), we get a palindrome (222343222).

The spelling of 100320221 in words is "one hundred million, three hundred twenty thousand, two hundred twenty-one".