12011043181 has 2 divisors, whose sum is σ = 12011043182. Its totient is φ = 12011043180.

The previous prime is 12011043179. The next prime is 12011043281. The reversal of 12011043181 is 18134011021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6240210025 + 5770833156 = 78995^2 + 75966^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011043181 - 2¹ = 12011043179 is a prime.

It is a super-2 number, since 2×12011043181² (a number of 21 digits) contains 22 as substring.

Together with 12011043179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011043281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005521590 + 6005521591.

It is an arithmetic number, because the mean of its divisors is an integer number (6005521591).

Almost surely, 2^12011043181 is an apocalyptic number.

It is an amenable number.

12011043181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011043181 is an equidigital number, since it uses as much as digits as its factorization.

12011043181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 22.

The spelling of 12011043181 in words is "twelve billion, eleven million, forty-three thousand, one hundred eighty-one".