100112021 has 8 divisors (see below), whose sum is σ = 102432384. Its totient is φ = 97799680.

The previous prime is 100112009. The next prime is 100112029. The reversal of 100112021 is 120211001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100112021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100112029) 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 7 ways as a sum of consecutive naturals, for example, 28466 + ... + 31788.

It is an arithmetic number, because the mean of its divisors is an integer number (12804048).

Almost surely, 2^100112021 is an apocalyptic number.

It is an amenable number.

100112021 is a deficient number, since it is larger than the sum of its proper divisors (2320363).

100112021 is an equidigital number, since it uses as much as digits as its factorization.

100112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4011.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 100112021 is about 10005.5994822899. The cubic root of 100112021 is about 464.3321371581.

Adding to 100112021 its reverse (120211001), we get a palindrome (220323022).

It can be divided in two parts, 1001 and 12021, that multiplied together give a palindrome (12033021).

The spelling of 100112021 in words is "one hundred million, one hundred twelve thousand, twenty-one".