100001099993 has 2 divisors, whose sum is σ = 100001099994. Its totient is φ = 100001099992.

The previous prime is 100001099963. The next prime is 100001100053. The reversal of 100001099993 is 399990100001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53568176704 + 46432923289 = 231448^2 + 215483^2 .

It is a cyclic number.

It is not a de Polignac number, because 100001099993 - 2³⁰ = 98927358169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100001099993.

It is not a weakly prime, because it can be changed into another prime (100001099963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000549996 + 50000549997.

It is an arithmetic number, because the mean of its divisors is an integer number (50000549997).

Almost surely, 2^100001099993 is an apocalyptic number.

It is an amenable number.

100001099993 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001099993 is an equidigital number, since it uses as much as digits as its factorization.

100001099993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19683, while the sum is 41.

Adding to 100001099993 its reverse (399990100001), we get a palindrome (499991199994).

The spelling of 100001099993 in words is "one hundred billion, one million, ninety-nine thousand, nine hundred ninety-three".