133112331212 has 18 divisors (see below), whose sum is σ = 270978674652. Its totient is φ = 57048141864.

The previous prime is 133112331197. The next prime is 133112331217. The reversal of 133112331212 is 212133211331.

It is not an unprimeable number, because it can be changed into a prime (133112331217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339572078 + ... + 339572469.

It is an arithmetic number, because the mean of its divisors is an integer number (15054370814).

Almost surely, 2^133112331212 is an apocalyptic number.

It is an amenable number.

133112331212 is an abundant number, since it is smaller than the sum of its proper divisors (137866343440).

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

133112331212 is a wasteful number, since it uses less digits than its factorization.

133112331212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679144565 (or 679144556 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 133112331212 its reverse (212133211331), we get a palindrome (345245542543).

The spelling of 133112331212 in words is "one hundred thirty-three billion, one hundred twelve million, three hundred thirty-one thousand, two hundred twelve".