133021131312 has 20 divisors (see below), whose sum is σ = 343637922680. Its totient is φ = 44340377088.

The previous prime is 133021131311. The next prime is 133021131349. The reversal of 133021131312 is 213131120331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133021131311) 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, 1385636737 + ... + 1385636832.

It is an arithmetic number, because the mean of its divisors is an integer number (17181896134).

Almost surely, 2^133021131312 is an apocalyptic number.

133021131312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133021131312 is an abundant number, since it is smaller than the sum of its proper divisors (210616791368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133021131312 is a wasteful number, since it uses less digits than its factorization.

133021131312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771273580 (or 2771273574 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 133021131312 its reverse (213131120331), we get a palindrome (346152251643).

The spelling of 133021131312 in words is "one hundred thirty-three billion, twenty-one million, one hundred thirty-one thousand, three hundred twelve".