133221236056 has 16 divisors (see below), whose sum is σ = 250286425200. Its totient is φ = 66478189344.

The previous prime is 133221236051. The next prime is 133221236087. The reversal of 133221236056 is 650632122331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221236051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16549311 + ... + 16557358.

It is an arithmetic number, because the mean of its divisors is an integer number (15642901575).

Almost surely, 2^133221236056 is an apocalyptic number.

It is an amenable number.

133221236056 is a deficient number, since it is larger than the sum of its proper divisors (117065189144).

133221236056 is a wasteful number, since it uses less digits than its factorization.

133221236056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33107178 (or 33107174 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

Adding to 133221236056 its reverse (650632122331), we get a palindrome (783853358387).

The spelling of 133221236056 in words is "one hundred thirty-three billion, two hundred twenty-one million, two hundred thirty-six thousand, fifty-six".