10266221066 has 8 divisors (see below), whose sum is σ = 15651779844. Its totient is φ = 5048961120.

The previous prime is 10266221023. The next prime is 10266221087. The reversal of 10266221066 is 66012266201.

It can be written as a sum of positive squares in 2 ways, for example, as 9511125625 + 755095441 = 97525^2 + 27479^2 .

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

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, 42074555 + ... + 42074798.

Almost surely, 2^10266221066 is an apocalyptic number.

10266221066 is a deficient number, since it is larger than the sum of its proper divisors (5385558778).

10266221066 is an equidigital number, since it uses as much as digits as its factorization.

10266221066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84149416.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 10266221066 its reverse (66012266201), we get a palindrome (76278487267).

The spelling of 10266221066 in words is "ten billion, two hundred sixty-six million, two hundred twenty-one thousand, sixty-six".