100421333 has 2 divisors, whose sum is σ = 100421334. Its totient is φ = 100421332.

The previous prime is 100421323. The next prime is 100421357. The reversal of 100421333 is 333124001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100360324 + 61009 = 10018^2 + 247^2 .

It is a cyclic number.

It is not a de Polignac number, because 100421333 - 2⁴ = 100421317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100421303) 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 as a sum of consecutive naturals, namely, 50210666 + 50210667.

It is an arithmetic number, because the mean of its divisors is an integer number (50210667).

Almost surely, 2^100421333 is an apocalyptic number.

It is an amenable number.

100421333 is a deficient number, since it is larger than the sum of its proper divisors (1).

100421333 is an equidigital number, since it uses as much as digits as its factorization.

100421333 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 100421333 is about 10021.0445064374. The cubic root of 100421333 is about 464.8098548123.

Adding to 100421333 its reverse (333124001), we get a palindrome (433545334).

The spelling of 100421333 in words is "one hundred million, four hundred twenty-one thousand, three hundred thirty-three".