10201216666 has 16 divisors (see below), whose sum is σ = 15369493824. Its totient is φ = 5078084544.

The previous prime is 10201216651. The next prime is 10201216667. The reversal of 10201216666 is 66661210201.

It is not an unprimeable number, because it can be changed into a prime (10201216667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684850 + ... + 699586.

It is an arithmetic number, because the mean of its divisors is an integer number (960593364).

Almost surely, 2^10201216666 is an apocalyptic number.

10201216666 is a deficient number, since it is larger than the sum of its proper divisors (5168277158).

10201216666 is a wasteful number, since it uses less digits than its factorization.

10201216666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245.

The product of its (nonzero) digits is 5184, while the sum is 31.

Adding to 10201216666 its reverse (66661210201), we get a palindrome (76862426867).

The spelling of 10201216666 in words is "ten billion, two hundred one million, two hundred sixteen thousand, six hundred sixty-six".