133523141130121 has 4 divisors (see below), whose sum is σ = 135403748751744. Its totient is φ = 131642533508500.

The previous prime is 133523141130107. The next prime is 133523141130139. The reversal of 133523141130121 is 121031141325331.

It is a happy number.

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 133523141130121 - 2¹¹ = 133523141128073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133523141130521) 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, 940303810705 + ... + 940303810846.

It is an arithmetic number, because the mean of its divisors is an integer number (33850937187936).

Almost surely, 2^{133523141130121} is an apocalyptic number.

It is an amenable number.

133523141130121 is a deficient number, since it is larger than the sum of its proper divisors (1880607621623).

133523141130121 is an equidigital number, since it uses as much as digits as its factorization.

133523141130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880607621622.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 133523141130121 its reverse (121031141325331), we get a palindrome (254554282455452).

The spelling of 133523141130121 in words is "one hundred thirty-three trillion, five hundred twenty-three billion, one hundred forty-one million, one hundred thirty thousand, one hundred twenty-one".