99999998101 has 4 divisors (see below), whose sum is σ = 101886790572. Its totient is φ = 98113205632.

The previous prime is 99999998099. The next prime is 99999998129. The reversal of 99999998101 is 10189999999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10189999999 = 2609 ⋅3905711.

It can be written as a sum of positive squares in 2 ways, for example, as 27947480625 + 72052517476 = 167175^2 + 268426^2 .

It is a cyclic number.

It is not a de Polignac number, because 99999998101 - 2¹ = 99999998099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999998401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943396156 + ... + 943396261.

It is an arithmetic number, because the mean of its divisors is an integer number (25471697643).

Almost surely, 2^99999998101 is an apocalyptic number.

It is an amenable number.

99999998101 is a deficient number, since it is larger than the sum of its proper divisors (1886792471).

99999998101 is a wasteful number, since it uses less digits than its factorization.

99999998101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886792470.

The product of its (nonzero) digits is 38263752, while the sum is 73.

The spelling of 99999998101 in words is "ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-eight thousand, one hundred one".