133121010331 has 4 divisors (see below), whose sum is σ = 133122579192. Its totient is φ = 133119441472.

The previous prime is 133121010313. The next prime is 133121010353. The reversal of 133121010331 is 133010121331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133010121331 = 64901 ⋅2049431.

It is a cyclic number.

It is not a de Polignac number, because 133121010331 - 2²⁵ = 133087455899 is a prime.

It is a super-2 number, since 2×133121010331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133121010299 and 133121010308.

It is not an unprimeable number, because it can be changed into a prime (133121010301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 649405 + ... + 829438.

It is an arithmetic number, because the mean of its divisors is an integer number (33280644798).

Almost surely, 2^133121010331 is an apocalyptic number.

133121010331 is a deficient number, since it is larger than the sum of its proper divisors (1568861).

133121010331 is an equidigital number, since it uses as much as digits as its factorization.

133121010331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568860.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 133121010331 its reverse (133010121331), we get a palindrome (266131131662).

The spelling of 133121010331 in words is "one hundred thirty-three billion, one hundred twenty-one million, ten thousand, three hundred thirty-one".