12099564329081 has 2 divisors, whose sum is σ = 12099564329082. Its totient is φ = 12099564329080.

The previous prime is 12099564329063. The next prime is 12099564329093. The reversal of 12099564329081 is 18092346599021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12077605831225 + 21958497856 = 3475285^2 + 148184^2 .

It is an emirp because it is prime and its reverse (18092346599021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12099564329081 - 2¹⁴ = 12099564312697 is a prime.

It is a super-2 number, since 2×12099564329081² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12099564329081.

It is not a weakly prime, because it can be changed into another prime (12099564329681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6049782164540 + 6049782164541.

It is an arithmetic number, because the mean of its divisors is an integer number (6049782164541).

Almost surely, 2^{12099564329081} is an apocalyptic number.

It is an amenable number.

12099564329081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12099564329081 is an equidigital number, since it uses as much as digits as its factorization.

12099564329081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8398080, while the sum is 59.

The spelling of 12099564329081 in words is "twelve trillion, ninety-nine billion, five hundred sixty-four million, three hundred twenty-nine thousand, eighty-one".