100232021 has 4 divisors (see below), whose sum is σ = 103465344. Its totient is φ = 96998700.

The previous prime is 100232009. The next prime is 100232023. The reversal of 100232021 is 120232001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100232021 - 2²² = 96037717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100231993 and 100232011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100232023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1616615 + ... + 1616676.

It is an arithmetic number, because the mean of its divisors is an integer number (25866336).

Almost surely, 2^100232021 is an apocalyptic number.

It is an amenable number.

100232021 is a deficient number, since it is larger than the sum of its proper divisors (3233323).

100232021 is an equidigital number, since it uses as much as digits as its factorization.

100232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233322.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 100232021 is about 10011.5943285772. The cubic root of 100232021 is about 464.5175881083.

Adding to 100232021 its reverse (120232001), we get a palindrome (220464022).

The spelling of 100232021 in words is "one hundred million, two hundred thirty-two thousand, twenty-one".