100100420191 has 2 divisors, whose sum is σ = 100100420192. Its totient is φ = 100100420190.

The previous prime is 100100420179. The next prime is 100100420227. The reversal of 100100420191 is 191024001001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100100420191 - 2¹⁷ = 100100289119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100100420111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050210095 + 50050210096.

It is an arithmetic number, because the mean of its divisors is an integer number (50050210096).

Almost surely, 2^100100420191 is an apocalyptic number.

100100420191 is a deficient number, since it is larger than the sum of its proper divisors (1).

100100420191 is an equidigital number, since it uses as much as digits as its factorization.

100100420191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 100100420191 its reverse (191024001001), we get a palindrome (291124421192).

The spelling of 100100420191 in words is "one hundred billion, one hundred million, four hundred twenty thousand, one hundred ninety-one".