133221653611 has 4 divisors (see below), whose sum is σ = 135479647800. Its totient is φ = 130963659424.

The previous prime is 133221653599. The next prime is 133221653629. The reversal of 133221653611 is 116356122331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133221653611 - 2²⁵ = 133188099179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133221653641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128997006 + ... + 1128997123.

It is an arithmetic number, because the mean of its divisors is an integer number (33869911950).

Almost surely, 2^133221653611 is an apocalyptic number.

133221653611 is a deficient number, since it is larger than the sum of its proper divisors (2257994189).

133221653611 is an equidigital number, since it uses as much as digits as its factorization.

133221653611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257994188.

The product of its digits is 19440, while the sum is 34.

Adding to 133221653611 its reverse (116356122331), we get a palindrome (249577775942).

The spelling of 133221653611 in words is "one hundred thirty-three billion, two hundred twenty-one million, six hundred fifty-three thousand, six hundred eleven".