12046181321 has 2 divisors, whose sum is σ = 12046181322. Its totient is φ = 12046181320.

The previous prime is 12046181291. The next prime is 12046181333. The reversal of 12046181321 is 12318164021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11763571600 + 282609721 = 108460^2 + 16811^2 .

It is an emirp because it is prime and its reverse (12318164021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12046181321 - 2³⁰ = 10972439497 is a prime.

It is a super-2 number, since 2×12046181321² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12046183321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6023090660 + 6023090661.

It is an arithmetic number, because the mean of its divisors is an integer number (6023090661).

Almost surely, 2^12046181321 is an apocalyptic number.

It is an amenable number.

12046181321 is a deficient number, since it is larger than the sum of its proper divisors (1).

12046181321 is an equidigital number, since it uses as much as digits as its factorization.

12046181321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 29.

The spelling of 12046181321 in words is "twelve billion, forty-six million, one hundred eighty-one thousand, three hundred twenty-one".