100484021 has 16 divisors (see below), whose sum is σ = 112596480. Its totient is φ = 88900080.

The previous prime is 100484017. The next prime is 100484053. The reversal of 100484021 is 120484001.

It is a cyclic number.

It is not a de Polignac number, because 100484021 - 2² = 100484017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100483984 and 100484002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100484011) 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 15 ways as a sum of consecutive naturals, for example, 68720 + ... + 70166.

It is an arithmetic number, because the mean of its divisors is an integer number (7037280).

Almost surely, 2^100484021 is an apocalyptic number.

100484021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100484021 is a deficient number, since it is larger than the sum of its proper divisors (12112459).

100484021 is a wasteful number, since it uses less digits than its factorization.

100484021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1624.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 100484021 is about 10024.1718361169. The cubic root of 100484021 is about 464.9065538512.

Subtracting from 100484021 its sum of digits (20), we obtain a palindrome (100484001).

The spelling of 100484021 in words is "one hundred million, four hundred eighty-four thousand, twenty-one".