12005209198 has 16 divisors (see below), whose sum is σ = 18317612160. Its totient is φ = 5899389496.

The previous prime is 12005209189. The next prime is 12005209217. The reversal of 12005209198 is 89190250021.

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, 575865 + ... + 596347.

It is an arithmetic number, because the mean of its divisors is an integer number (1144850760).

Almost surely, 2^12005209198 is an apocalyptic number.

12005209198 is a deficient number, since it is larger than the sum of its proper divisors (6312402962).

12005209198 is a wasteful number, since it uses less digits than its factorization.

12005209198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25511.

The product of its (nonzero) digits is 12960, while the sum is 37.

The spelling of 12005209198 in words is "twelve billion, five million, two hundred nine thousand, one hundred ninety-eight".