100221130 has 8 divisors (see below), whose sum is σ = 180398052. Its totient is φ = 40088448.

The previous prime is 100221101. The next prime is 100221131. The reversal of 100221130 is 31122001.

It can be written as a sum of positive squares in 2 ways, for example, as 95199049 + 5022081 = 9757^2 + 2241^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 10022113 = 100221130 / (1 + 0 + 0 + 2 + 2 + 1 + 1 + 3 + 0).

It is not an unprimeable number, because it can be changed into a prime (100221131) 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 3 ways as a sum of consecutive naturals, for example, 5011047 + ... + 5011066.

Almost surely, 2^100221130 is an apocalyptic number.

100221130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100221130 is a deficient number, since it is larger than the sum of its proper divisors (80176922).

100221130 is a wasteful number, since it uses less digits than its factorization.

100221130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10022120.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 100221130 is about 10011.0503944391. The cubic root of 100221130 is about 464.5007629984.

Adding to 100221130 its reverse (31122001), we get a palindrome (131343131).

The spelling of 100221130 in words is "one hundred million, two hundred twenty-one thousand, one hundred thirty".