133230001212 has 144 divisors (see below), whose sum is σ = 420686832384. Its totient is φ = 34538400000.

The previous prime is 133230001211. The next prime is 133230001237. The reversal of 133230001212 is 212100032331.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133230001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1398087 + ... + 1490337.

It is an arithmetic number, because the mean of its divisors is an integer number (2921436336).

Almost surely, 2^133230001212 is an apocalyptic number.

133230001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133230001212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210343416192).

133230001212 is an abundant number, since it is smaller than the sum of its proper divisors (287456831172).

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

133230001212 is a wasteful number, since it uses less digits than its factorization.

133230001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92800 (or 92795 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 133230001212 its reverse (212100032331), we get a palindrome (345330033543).

The spelling of 133230001212 in words is "one hundred thirty-three billion, two hundred thirty million, one thousand, two hundred twelve".