100216420 has 24 divisors (see below), whose sum is σ = 210974400. Its totient is φ = 39987552.

The previous prime is 100216381. The next prime is 100216433. The reversal of 100216420 is 24612001.

It is a junction number, because it is equal to n+sod(n) for n = 100216394 and 100216403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2401 + ... + 14359.

It is an arithmetic number, because the mean of its divisors is an integer number (8790600).

Almost surely, 2^100216420 is an apocalyptic number.

100216420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100216420 is an abundant number, since it is smaller than the sum of its proper divisors (110757980).

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

100216420 is a wasteful number, since it uses less digits than its factorization.

100216420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12387 (or 12385 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 100216420 is about 10010.8151516248. The cubic root of 100216420 is about 464.4934863131.

Adding to 100216420 its reverse (24612001), we get a palindrome (124828421).

The spelling of 100216420 in words is "one hundred million, two hundred sixteen thousand, four hundred twenty".