99612101 has 4 divisors (see below), whose sum is σ = 99657132. Its totient is φ = 99567072.

The previous prime is 99612067. The next prime is 99612109. The reversal of 99612101 is 10121699.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23049601 + 76562500 = 4801^2 + 8750^2 .

It is a cyclic number.

It is not a de Polignac number, because 99612101 - 2¹⁰ = 99611077 is a prime.

It is a super-3 number, since 3×99612101³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99612109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19016 + ... + 23681.

It is an arithmetic number, because the mean of its divisors is an integer number (24914283).

Almost surely, 2^99612101 is an apocalyptic number.

It is an amenable number.

99612101 is a deficient number, since it is larger than the sum of its proper divisors (45031).

99612101 is a wasteful number, since it uses less digits than its factorization.

99612101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45030.

The product of its (nonzero) digits is 972, while the sum is 29.

The square root of 99612101 is about 9980.5862052286. The cubic root of 99612101 is about 463.5579497961.

The spelling of 99612101 in words is "ninety-nine million, six hundred twelve thousand, one hundred one".