133212021312 has 56 divisors (see below), whose sum is σ = 360653498656. Its totient is φ = 43371353088.

The previous prime is 133212021307. The next prime is 133212021347. The reversal of 133212021312 is 213120212331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8059333 + ... + 8075844.

Almost surely, 2^133212021312 is an apocalyptic number.

133212021312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133212021312 is an abundant number, since it is smaller than the sum of its proper divisors (227441477344).

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

133212021312 is a wasteful number, since it uses less digits than its factorization.

133212021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16135235 (or 16135225 counting only the distinct ones).

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

Adding to 133212021312 its reverse (213120212331), we get a palindrome (346332233643).

The spelling of 133212021312 in words is "one hundred thirty-three billion, two hundred twelve million, twenty-one thousand, three hundred twelve".