12081199011 has 8 divisors (see below), whose sum is σ = 18409446144. Its totient is φ = 6903542280.

The previous prime is 12081198991. The next prime is 12081199019. The reversal of 12081199011 is 11099118021.

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

It is not a de Polignac number, because 12081199011 - 2⁵ = 12081198979 is a prime.

It is a super-3 number, since 3×12081199011³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12081199019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287647575 + ... + 287647616.

It is an arithmetic number, because the mean of its divisors is an integer number (2301180768).

Almost surely, 2^12081199011 is an apocalyptic number.

12081199011 is a deficient number, since it is larger than the sum of its proper divisors (6328247133).

12081199011 is an equidigital number, since it uses as much as digits as its factorization.

12081199011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575295201.

The product of its (nonzero) digits is 1296, while the sum is 33.

The spelling of 12081199011 in words is "twelve billion, eighty-one million, one hundred ninety-nine thousand, eleven".