12012600373666 has 4 divisors (see below), whose sum is σ = 18018900560502. Its totient is φ = 6006300186832.

The previous prime is 12012600373649. The next prime is 12012600373673. The reversal of 12012600373666 is 66637300621021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11418120823041 + 594479550625 = 3379071^2 + 771025^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3003150093415 + ... + 3003150093418.

Almost surely, 2^{12012600373666} is an apocalyptic number.

12012600373666 is a deficient number, since it is larger than the sum of its proper divisors (6006300186836).

12012600373666 is an equidigital number, since it uses as much as digits as its factorization.

12012600373666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006300186835.

The product of its (nonzero) digits is 326592, while the sum is 43.

Adding to 12012600373666 its reverse (66637300621021), we get a palindrome (78649900994687).

The spelling of 12012600373666 in words is "twelve trillion, twelve billion, six hundred million, three hundred seventy-three thousand, six hundred sixty-six".