133001220310121 has 4 divisors (see below), whose sum is σ = 140824821504852. Its totient is φ = 125177619115392.

The previous prime is 133001220310109. The next prime is 133001220310129. The reversal of 133001220310121 is 121013022100331.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38756053390096 + 94245166920025 = 6225436^2 + 9707995^2 .

It is a cyclic number.

It is not a de Polignac number, because 133001220310121 - 2⁴² = 128603173799017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133001220310093 and 133001220310102.

It is not an unprimeable number, because it can be changed into a prime (133001220310129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3911800597340 + ... + 3911800597373.

It is an arithmetic number, because the mean of its divisors is an integer number (35206205376213).

Almost surely, 2^{133001220310121} is an apocalyptic number.

It is an amenable number.

133001220310121 is a deficient number, since it is larger than the sum of its proper divisors (7823601194731).

133001220310121 is an equidigital number, since it uses as much as digits as its factorization.

133001220310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7823601194730.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 133001220310121 its reverse (121013022100331), we get a palindrome (254014242410452).

The spelling of 133001220310121 in words is "one hundred thirty-three trillion, one billion, two hundred twenty million, three hundred ten thousand, one hundred twenty-one".