99121233 has 8 divisors (see below), whose sum is σ = 139117600. Its totient is φ = 62602848.

The previous prime is 99121223. The next prime is 99121247. The reversal of 99121233 is 33212199.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99121233 - 2⁵ = 99121201 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99121233.

It is not an unprimeable number, because it can be changed into a prime (99121223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869428 + ... + 869541.

It is an arithmetic number, because the mean of its divisors is an integer number (17389700).

Almost surely, 2^99121233 is an apocalyptic number.

It is an amenable number.

99121233 is a deficient number, since it is larger than the sum of its proper divisors (39996367).

99121233 is a wasteful number, since it uses less digits than its factorization.

99121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738991.

The product of its digits is 2916, while the sum is 30.

The square root of 99121233 is about 9955.9646945939. The cubic root of 99121233 is about 462.7952561263.

The spelling of 99121233 in words is "ninety-nine million, one hundred twenty-one thousand, two hundred thirty-three".