100221451 has 8 divisors (see below), whose sum is σ = 109407024. Its totient is φ = 91048320.

The previous prime is 100221427. The next prime is 100221487. The reversal of 100221451 is 154122001.

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

It is not a de Polignac number, because 100221451 - 2⁷ = 100221323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24231 + ... + 28063.

It is an arithmetic number, because the mean of its divisors is an integer number (13675878).

Almost surely, 2^100221451 is an apocalyptic number.

100221451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100221451 is a deficient number, since it is larger than the sum of its proper divisors (9185573).

100221451 is a wasteful number, since it uses less digits than its factorization.

100221451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6221.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 100221451 is about 10011.0664267100. The cubic root of 100221451 is about 464.5012589171.

Adding to 100221451 its reverse (154122001), we get a palindrome (254343452).

The spelling of 100221451 in words is "one hundred million, two hundred twenty-one thousand, four hundred fifty-one".