43243321212 has 144 divisors (see below), whose sum is σ = 134660740032. Its totient is φ = 11394155520.

The previous prime is 43243321189. The next prime is 43243321241. The reversal of 43243321212 is 21212334234.

43243321212 is a `hidden beast` number, since 4 + 3 + 2 + 433 + 212 + 12 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3863368 + ... + 3874544.

It is an arithmetic number, because the mean of its divisors is an integer number (935144028).

Almost surely, 2^43243321212 is an apocalyptic number.

43243321212 is a gapful number since it is divisible by the number (42) 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 43243321212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67330370016).

43243321212 is an abundant number, since it is smaller than the sum of its proper divisors (91417418820).

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

43243321212 is a wasteful number, since it uses less digits than its factorization.

43243321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388 (or 12383 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 43243321212 its reverse (21212334234), we get a palindrome (64455655446).

The spelling of 43243321212 in words is "forty-three billion, two hundred forty-three million, three hundred twenty-one thousand, two hundred twelve".