100000230021 has 20 divisors (see below), whose sum is σ = 149427317952. Its totient is φ = 66647068488.

The previous prime is 100000229999. The next prime is 100000230053. The reversal of 100000230021 is 120032000001.

It is a happy number.

It is not a de Polignac number, because 100000230021 - 2¹⁰ = 100000228997 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 100000229985 and 100000230012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000231021) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 94786 + ... + 457148.

Almost surely, 2^100000230021 is an apocalyptic number.

It is an amenable number.

100000230021 is a deficient number, since it is larger than the sum of its proper divisors (49427087931).

100000230021 is an equidigital number, since it uses as much as digits as its factorization.

100000230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365782 (or 365773 counting only the distinct ones).

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

Adding to 100000230021 its reverse (120032000001), we get a palindrome (220032230022).

The spelling of 100000230021 in words is "one hundred billion, two hundred thirty thousand, twenty-one".