12111112120099 has 4 divisors (see below), whose sum is σ = 12406505098680. Its totient is φ = 11815719141520.

The previous prime is 12111112120087. The next prime is 12111112120189. The reversal of 12111112120099 is 99002121111121.

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

It is a cyclic number.

It is not a de Polignac number, because 12111112120099 - 2¹⁹ = 12111111595811 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 12111112120099.

It is not an unprimeable number, because it can be changed into a prime (12111112127099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147696489229 + ... + 147696489310.

It is an arithmetic number, because the mean of its divisors is an integer number (3101626274670).

Almost surely, 2^{12111112120099} is an apocalyptic number.

12111112120099 is a deficient number, since it is larger than the sum of its proper divisors (295392978581).

12111112120099 is an equidigital number, since it uses as much as digits as its factorization.

12111112120099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295392978580.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 12111112120099 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, one hundred twenty thousand, ninety-nine".