100221423 has 8 divisors (see below), whose sum is σ = 134526000. Its totient is φ = 66365568.

The previous prime is 100221389. The next prime is 100221427. The reversal of 100221423 is 324122001.

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

It is not a de Polignac number, because 100221423 - 2²⁰ = 99172847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221427) 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, 111658 + ... + 112551.

It is an arithmetic number, because the mean of its divisors is an integer number (16815750).

Almost surely, 2^100221423 is an apocalyptic number.

100221423 is a deficient number, since it is larger than the sum of its proper divisors (34304577).

100221423 is a wasteful number, since it uses less digits than its factorization.

100221423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224361.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 100221423 is about 10011.0650282575. The cubic root of 100221423 is about 464.5012156594.

Adding to 100221423 its reverse (324122001), we get a palindrome (424343424).

The spelling of 100221423 in words is "one hundred million, two hundred twenty-one thousand, four hundred twenty-three".