100021300091 has 2 divisors, whose sum is σ = 100021300092. Its totient is φ = 100021300090.

The previous prime is 100021300061. The next prime is 100021300123. The reversal of 100021300091 is 190003120001.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (190003120001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100021300091 - 2²² = 100017105787 is a prime.

It is not a weakly prime, because it can be changed into another prime (100021300061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50010650045 + 50010650046.

It is an arithmetic number, because the mean of its divisors is an integer number (50010650046).

Almost surely, 2^100021300091 is an apocalyptic number.

100021300091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100021300091 is an equidigital number, since it uses as much as digits as its factorization.

100021300091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 100021300091 its reverse (190003120001), we get a palindrome (290024420092).

The spelling of 100021300091 in words is "one hundred billion, twenty-one million, three hundred thousand, ninety-one".