133226137221 has 16 divisors (see below), whose sum is σ = 191544642240. Its totient is φ = 82090558080.

The previous prime is 133226137171. The next prime is 133226137237. The reversal of 133226137221 is 122731622331.

It is not a de Polignac number, because 133226137221 - 2¹⁴ = 133226120837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133226137271) 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 15 ways as a sum of consecutive naturals, for example, 28501330 + ... + 28506003.

It is an arithmetic number, because the mean of its divisors is an integer number (11971540140).

Almost surely, 2^133226137221 is an apocalyptic number.

It is an amenable number.

133226137221 is a deficient number, since it is larger than the sum of its proper divisors (58318505019).

133226137221 is a wasteful number, since it uses less digits than its factorization.

133226137221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57007396.

The product of its digits is 18144, while the sum is 33.

Adding to 133226137221 its reverse (122731622331), we get a palindrome (255957759552).

The spelling of 133226137221 in words is "one hundred thirty-three billion, two hundred twenty-six million, one hundred thirty-seven thousand, two hundred twenty-one".