100452021 has 4 divisors (see below), whose sum is σ = 133936032. Its totient is φ = 66968012.

The previous prime is 100451987. The next prime is 100452041. The reversal of 100452021 is 120254001.

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 100452021 - 2¹⁰ = 100450997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100452041) 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, 16742001 + ... + 16742006.

It is an arithmetic number, because the mean of its divisors is an integer number (33484008).

Almost surely, 2^100452021 is an apocalyptic number.

It is an amenable number.

100452021 is a deficient number, since it is larger than the sum of its proper divisors (33484011).

100452021 is an equidigital number, since it uses as much as digits as its factorization.

100452021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33484010.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 100452021 is about 10022.5755671883. The cubic root of 100452021 is about 464.8571974491.

The spelling of 100452021 in words is "one hundred million, four hundred fifty-two thousand, twenty-one".