1200002061866 has 8 divisors (see below), whose sum is σ = 1800009657120. Its totient is φ = 599998842828.

The previous prime is 1200002061827. The next prime is 1200002061871. The reversal of 1200002061866 is 6681602000021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 290486 + ... + 1576193.

It is an arithmetic number, because the mean of its divisors is an integer number (225001207140).

Almost surely, 2^{1200002061866} is an apocalyptic number.

1200002061866 is a deficient number, since it is larger than the sum of its proper divisors (600007595254).

1200002061866 is a wasteful number, since it uses less digits than its factorization.

1200002061866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2188108.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 1200002061866 its reverse (6681602000021), we get a palindrome (7881604061887).

The spelling of 1200002061866 in words is "one trillion, two hundred billion, two million, sixty-one thousand, eight hundred sixty-six".