100321212091 has 2 divisors, whose sum is σ = 100321212092. Its totient is φ = 100321212090.

The previous prime is 100321212011. The next prime is 100321212097. The reversal of 100321212091 is 190212123001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100321212091 - 2¹⁵ = 100321179323 is a prime.

It is not a weakly prime, because it can be changed into another prime (100321212097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50160606045 + 50160606046.

It is an arithmetic number, because the mean of its divisors is an integer number (50160606046).

Almost surely, 2^100321212091 is an apocalyptic number.

100321212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100321212091 is an equidigital number, since it uses as much as digits as its factorization.

100321212091 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 22.

Adding to 100321212091 its reverse (190212123001), we get a palindrome (290533335092).

The spelling of 100321212091 in words is "one hundred billion, three hundred twenty-one million, two hundred twelve thousand, ninety-one".