12011272843 has 4 divisors (see below), whose sum is σ = 12190545640. Its totient is φ = 11832000048.

The previous prime is 12011272831. The next prime is 12011272849. The reversal of 12011272843 is 34827211021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34827211021 = 76753 ⋅453757.

It is a cyclic number.

It is not a de Polignac number, because 12011272843 - 2⁵ = 12011272811 is a prime.

It is a super-3 number, since 3×12011272843³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011272849) 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, 89636298 + ... + 89636431.

It is an arithmetic number, because the mean of its divisors is an integer number (3047636410).

Almost surely, 2^12011272843 is an apocalyptic number.

12011272843 is a deficient number, since it is larger than the sum of its proper divisors (179272797).

12011272843 is an equidigital number, since it uses as much as digits as its factorization.

12011272843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179272796.

The product of its (nonzero) digits is 5376, while the sum is 31.

Adding to 12011272843 its reverse (34827211021), we get a palindrome (46838483864).

The spelling of 12011272843 in words is "twelve billion, eleven million, two hundred seventy-two thousand, eight hundred forty-three".