100229521 has 16 divisors (see below), whose sum is σ = 118757376. Its totient is φ = 82809936.

The previous prime is 100229509. The next prime is 100229551. The reversal of 100229521 is 125922001.

It is a cyclic number.

It is not a de Polignac number, because 100229521 - 2⁵ = 100229489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100229492 and 100229501.

It is not an unprimeable number, because it can be changed into a prime (100229551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19770 + ... + 24316.

It is an arithmetic number, because the mean of its divisors is an integer number (7422336).

Almost surely, 2^100229521 is an apocalyptic number.

It is an amenable number.

100229521 is a deficient number, since it is larger than the sum of its proper divisors (18527855).

100229521 is an equidigital number, since it uses as much as digits as its factorization.

100229521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 100229521 is about 10011.4694725600. The cubic root of 100229521 is about 464.5137260570.

The spelling of 100229521 in words is "one hundred million, two hundred twenty-nine thousand, five hundred twenty-one".