100021309867 has 2 divisors, whose sum is σ = 100021309868. Its totient is φ = 100021309866.

The previous prime is 100021309849. The next prime is 100021309889. The reversal of 100021309867 is 768903120001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100021309867 - 2¹⁵ = 100021277099 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021309067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010654933 + 50010654934.

It is an arithmetic number, because the mean of its divisors is an integer number (50010654934).

Almost surely, 2^100021309867 is an apocalyptic number.

100021309867 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021309867 is an equidigital number, since it uses as much as digits as its factorization.

100021309867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

Adding to 100021309867 its reverse (768903120001), we get a palindrome (868924429868).

The spelling of 100021309867 in words is "one hundred billion, twenty-one million, three hundred nine thousand, eight hundred sixty-seven".