99141121 has 4 divisors (see below), whose sum is σ = 99689044. Its totient is φ = 98593200.

The previous prime is 99141113. The next prime is 99141137. The reversal of 99141121 is 12114199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12114199 = 29 ⋅417731.

It can be written as a sum of positive squares in 2 ways, for example, as 7728400 + 91412721 = 2780^2 + 9561^2 .

It is a cyclic number.

It is not a de Polignac number, because 99141121 - 2³ = 99141113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99141121.

It is not an unprimeable number, because it can be changed into a prime (99141151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273690 + ... + 274051.

It is an arithmetic number, because the mean of its divisors is an integer number (24922261).

Almost surely, 2^99141121 is an apocalyptic number.

It is an amenable number.

99141121 is a deficient number, since it is larger than the sum of its proper divisors (547923).

99141121 is a wasteful number, since it uses less digits than its factorization.

99141121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547922.

The product of its digits is 648, while the sum is 28.

The square root of 99141121 is about 9956.9634427369. The cubic root of 99141121 is about 462.8262062947.

The spelling of 99141121 in words is "ninety-nine million, one hundred forty-one thousand, one hundred twenty-one".