100421214 has 16 divisors (see below), whose sum is σ = 207321600. Its totient is φ = 32393880.

The previous prime is 100421201. The next prime is 100421221. The reversal of 100421214 is 412124001.

It is a junction number, because it is equal to n+sod(n) for n = 100421193 and 100421202.

It is a congruent number.

It is an unprimeable number.

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, 269764 + ... + 270135.

It is an arithmetic number, because the mean of its divisors is an integer number (12957600).

Almost surely, 2^100421214 is an apocalyptic number.

100421214 is an abundant number, since it is smaller than the sum of its proper divisors (106900386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100421214 is a wasteful number, since it uses less digits than its factorization.

100421214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539935.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 100421214 is about 10021.0385689309. The cubic root of 100421214 is about 464.8096712112.

Adding to 100421214 its reverse (412124001), we get a palindrome (512545215).

The spelling of 100421214 in words is "one hundred million, four hundred twenty-one thousand, two hundred fourteen".