99121201133 has 16 divisors (see below), whose sum is σ = 100041454080. Its totient is φ = 98205902256.

The previous prime is 99121201121. The next prime is 99121201163. The reversal of 99121201133 is 33110212199.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 99121201133 - 2¹⁰ = 99121200109 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 99121201133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99121201163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104668166 + ... + 104669112.

It is an arithmetic number, because the mean of its divisors is an integer number (6252590880).

Almost surely, 2^99121201133 is an apocalyptic number.

It is an amenable number.

99121201133 is a deficient number, since it is larger than the sum of its proper divisors (920252947).

99121201133 is a wasteful number, since it uses less digits than its factorization.

99121201133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 99121201133 in words is "ninety-nine billion, one hundred twenty-one million, two hundred one thousand, one hundred thirty-three".