133121021013 has 12 divisors (see below), whose sum is σ = 202406231040. Its totient is φ = 84076434216.

The previous prime is 133121020997. The next prime is 133121021041. The reversal of 133121021013 is 310120121331.

It is not a de Polignac number, because 133121021013 - 2⁴ = 133121020997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133121021053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 389242581 + ... + 389242922.

It is an arithmetic number, because the mean of its divisors is an integer number (16867185920).

Almost surely, 2^133121021013 is an apocalyptic number.

It is an amenable number.

133121021013 is a deficient number, since it is larger than the sum of its proper divisors (69285210027).

133121021013 is a wasteful number, since it uses less digits than its factorization.

133121021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778485528 (or 778485525 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 133121021013 its reverse (310120121331), we get a palindrome (443241142344).

The spelling of 133121021013 in words is "one hundred thirty-three billion, one hundred twenty-one million, twenty-one thousand, thirteen".