133222100312 has 128 divisors (see below), whose sum is σ = 314510428800. Its totient is φ = 51581902848.

The previous prime is 133222100311. The next prime is 133222100321. The reversal of 133222100312 is 213001222331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133222100311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4762238 + ... + 4790130.

It is an arithmetic number, because the mean of its divisors is an integer number (2457112725).

Almost surely, 2^133222100312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133222100312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157255214400).

133222100312 is an abundant number, since it is smaller than the sum of its proper divisors (181288328488).

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

133222100312 is a wasteful number, since it uses less digits than its factorization.

133222100312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28125 (or 28121 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 133222100312 its reverse (213001222331), we get a palindrome (346223322643).

The spelling of 133222100312 in words is "one hundred thirty-three billion, two hundred twenty-two million, one hundred thousand, three hundred twelve".