133243221066 has 16 divisors (see below), whose sum is σ = 266997938688. Its totient is φ = 44329157600.

The previous prime is 133243221043. The next prime is 133243221073. The reversal of 133243221066 is 660122342331.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21308970 + ... + 21315221.

It is an arithmetic number, because the mean of its divisors is an integer number (16687371168).

Almost surely, 2^133243221066 is an apocalyptic number.

133243221066 is an abundant number, since it is smaller than the sum of its proper divisors (133754717622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133243221066 is a wasteful number, since it uses less digits than its factorization.

133243221066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42624717.

The product of its (nonzero) digits is 31104, while the sum is 33.

Adding to 133243221066 its reverse (660122342331), we get a palindrome (793365563397).

The spelling of 133243221066 in words is "one hundred thirty-three billion, two hundred forty-three million, two hundred twenty-one thousand, sixty-six".