100224421 has 24 divisors (see below), whose sum is σ = 113954400. Its totient is φ = 88044000.

The previous prime is 100224391. The next prime is 100224497. The reversal of 100224421 is 124422001.

It is not a de Polignac number, because 100224421 - 2⁵ = 100224389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100224395 and 100224404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100224121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 720970 + ... + 721108.

It is an arithmetic number, because the mean of its divisors is an integer number (4748100).

Almost surely, 2^100224421 is an apocalyptic number.

100224421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100224421 is a deficient number, since it is larger than the sum of its proper divisors (13729979).

100224421 is a wasteful number, since it uses less digits than its factorization.

100224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 100224421 is about 10011.2147614563. The cubic root of 100224421 is about 464.5058472732.

Adding to 100224421 its reverse (124422001), we get a palindrome (224646422).

The spelling of 100224421 in words is "one hundred million, two hundred twenty-four thousand, four hundred twenty-one".