100433340521 has 2 divisors, whose sum is σ = 100433340522. Its totient is φ = 100433340520.

The previous prime is 100433340481. The next prime is 100433340523. The reversal of 100433340521 is 125043334001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66324791296 + 34108549225 = 257536^2 + 184685^2 .

It is a cyclic number.

It is not a de Polignac number, because 100433340521 - 2¹⁴ = 100433324137 is a prime.

Together with 100433340523, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100433340523) 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, 50216670260 + 50216670261.

It is an arithmetic number, because the mean of its divisors is an integer number (50216670261).

Almost surely, 2^100433340521 is an apocalyptic number.

It is an amenable number.

100433340521 is a deficient number, since it is larger than the sum of its proper divisors (1).

100433340521 is an equidigital number, since it uses as much as digits as its factorization.

100433340521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 100433340521 its reverse (125043334001), we get a palindrome (225476674522).

The spelling of 100433340521 in words is "one hundred billion, four hundred thirty-three million, three hundred forty thousand, five hundred twenty-one".