12033001181 has 2 divisors, whose sum is σ = 12033001182. Its totient is φ = 12033001180.

The previous prime is 12033001171. The next prime is 12033001187. The reversal of 12033001181 is 18110033021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11458632025 + 574369156 = 107045^2 + 23966^2 .

It is an emirp because it is prime and its reverse (18110033021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12033001181 - 2¹⁰ = 12033000157 is a prime.

It is a super-2 number, since 2×12033001181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12033001187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6016500590 + 6016500591.

It is an arithmetic number, because the mean of its divisors is an integer number (6016500591).

Almost surely, 2^12033001181 is an apocalyptic number.

It is an amenable number.

12033001181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12033001181 is an equidigital number, since it uses as much as digits as its factorization.

12033001181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 12033001181 in words is "twelve billion, thirty-three million, one thousand, one hundred eighty-one".