12111691198 has 16 divisors (see below), whose sum is σ = 18334513296. Its totient is φ = 6000329920.

The previous prime is 12111691183. The next prime is 12111691211. The reversal of 12111691198 is 89119611121.

It is a self number, because there is not a number n which added to its sum of digits gives 12111691198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135690 + ... + 206482.

It is an arithmetic number, because the mean of its divisors is an integer number (1145907081).

Almost surely, 2^12111691198 is an apocalyptic number.

12111691198 is a deficient number, since it is larger than the sum of its proper divisors (6222822098).

12111691198 is a wasteful number, since it uses less digits than its factorization.

12111691198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71579.

The product of its digits is 7776, while the sum is 40.

The spelling of 12111691198 in words is "twelve billion, one hundred eleven million, six hundred ninety-one thousand, one hundred ninety-eight".