10000021066 has 16 divisors (see below), whose sum is σ = 17144499456. Its totient is φ = 4285321776.

The previous prime is 10000021063. The next prime is 10000021067. The reversal of 10000021066 is 66012000001.

It is not an unprimeable number, because it can be changed into a prime (10000021063) 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, 159780 + ... + 213376.

It is an arithmetic number, because the mean of its divisors is an integer number (1071531216).

Almost surely, 2^10000021066 is an apocalyptic number.

10000021066 is a deficient number, since it is larger than the sum of its proper divisors (7144478390).

10000021066 is a wasteful number, since it uses less digits than its factorization.

10000021066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66933.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10000021066 its reverse (66012000001), we get a palindrome (76012021067).

The spelling of 10000021066 in words is "ten billion, twenty-one thousand, sixty-six".