133122312012 has 24 divisors (see below), whose sum is σ = 328890418416. Its totient is φ = 41763862528.

The previous prime is 133122311969. The next prime is 133122312017. The reversal of 133122312012 is 210213221331.

It is a self number, because there is not a number n which added to its sum of digits gives 133122312012.

It is not an unprimeable number, because it can be changed into a prime (133122312017) 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 7 ways as a sum of consecutive naturals, for example, 326279973 + ... + 326280380.

It is an arithmetic number, because the mean of its divisors is an integer number (13703767434).

Almost surely, 2^133122312012 is an apocalyptic number.

133122312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133122312012 is an abundant number, since it is smaller than the sum of its proper divisors (195768106404).

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

133122312012 is a wasteful number, since it uses less digits than its factorization.

133122312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652560377 (or 652560375 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 133122312012 its reverse (210213221331), we get a palindrome (343335533343).

The spelling of 133122312012 in words is "one hundred thirty-three billion, one hundred twenty-two million, three hundred twelve thousand, twelve".