133011312012 has 36 divisors (see below), whose sum is σ = 336234114216. Its totient is φ = 44335643520.

The previous prime is 133011311999. The next prime is 133011312017. The reversal of 133011312012 is 210213110331.

133011312012 is a `hidden beast` number, since 1 + 330 + 1 + 131 + 201 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (133011312017) 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, 2054212 + ... + 2117972.

It is an arithmetic number, because the mean of its divisors is an integer number (9339836506).

Almost surely, 2^133011312012 is an apocalyptic number.

133011312012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133011312012 is an abundant number, since it is smaller than the sum of its proper divisors (203222802204).

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

133011312012 is a wasteful number, since it uses less digits than its factorization.

133011312012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121718 (or 121713 counting only the distinct ones).

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

Adding to 133011312012 its reverse (210213110331), we get a palindrome (343224422343).

The spelling of 133011312012 in words is "one hundred thirty-three billion, eleven million, three hundred twelve thousand, twelve".