100221030 has 128 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 21140352.

The previous prime is 100221019. The next prime is 100221073. The reversal of 100221030 is 30122001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 22531 + ... + 26609.

It is an arithmetic number, because the mean of its divisors is an integer number (2570400).

Almost surely, 2^100221030 is an apocalyptic number.

100221030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 100221030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164505600).

100221030 is an abundant number, since it is smaller than the sum of its proper divisors (228790170).

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

100221030 is a wasteful number, since it uses less digits than its factorization.

100221030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115 (or 4109 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 100221030 is about 10011.0453999570. The cubic root of 100221030 is about 464.5006085064.

Adding to 100221030 its reverse (30122001), we get a palindrome (130343031).

The spelling of 100221030 in words is "one hundred million, two hundred twenty-one thousand, thirty".