12166533011 has 2 divisors, whose sum is σ = 12166533012. Its totient is φ = 12166533010.

The previous prime is 12166532999. The next prime is 12166533053. The reversal of 12166533011 is 11033566121.

It is a weak prime.

It is an emirp because it is prime and its reverse (11033566121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12166533011 - 2¹⁰ = 12166531987 is a prime.

It is a super-2 number, since 2×12166533011² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12166533811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6083266505 + 6083266506.

It is an arithmetic number, because the mean of its divisors is an integer number (6083266506).

Almost surely, 2^12166533011 is an apocalyptic number.

12166533011 is a deficient number, since it is larger than the sum of its proper divisors (1).

12166533011 is an equidigital number, since it uses as much as digits as its factorization.

12166533011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The spelling of 12166533011 in words is "twelve billion, one hundred sixty-six million, five hundred thirty-three thousand, eleven".