99111001232 has 160 divisors (see below), whose sum is σ = 214497414144. Its totient is φ = 44152012800.

The previous prime is 99111001207. The next prime is 99111001237. The reversal of 99111001232 is 23210011199.

It is a junction number, because it is equal to n+sod(n) for n = 99111001195 and 99111001204.

It is not an unprimeable number, because it can be changed into a prime (99111001237) 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 31 ways as a sum of consecutive naturals, for example, 119843603 + ... + 119844429.

Almost surely, 2^99111001232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99111001232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107248707072).

99111001232 is an abundant number, since it is smaller than the sum of its proper divisors (115386412912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99111001232 is a wasteful number, since it uses less digits than its factorization.

99111001232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1171 counting only the distinct ones).

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

The spelling of 99111001232 in words is "ninety-nine billion, one hundred eleven million, one thousand, two hundred thirty-two".