133232121220321 has 4 divisors (see below), whose sum is σ = 133519879581952. Its totient is φ = 132944362858692.

The previous prime is 133232121220307. The next prime is 133232121220339. The reversal of 133232121220321 is 123022121232331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133232121220321 - 2¹⁵ = 133232121187553 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133232121220321.

It is not an unprimeable number, because it can be changed into a prime (133232121220381) 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, 143879180121 + ... + 143879181046.

It is an arithmetic number, because the mean of its divisors is an integer number (33379969895488).

Almost surely, 2^{133232121220321} is an apocalyptic number.

It is an amenable number.

133232121220321 is a deficient number, since it is larger than the sum of its proper divisors (287758361631).

133232121220321 is an equidigital number, since it uses as much as digits as its factorization.

133232121220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287758361630.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 133232121220321 its reverse (123022121232331), we get a palindrome (256254242452652).

The spelling of 133232121220321 in words is "one hundred thirty-three trillion, two hundred thirty-two billion, one hundred twenty-one million, two hundred twenty thousand, three hundred twenty-one".