43212212144240 has 160 divisors (see below), whose sum is σ = 108643213561920. Its totient is φ = 15928367357952.

The previous prime is 43212212144197. The next prime is 43212212144263. The reversal of 43212212144240 is 4244121221234.

It is a junction number, because it is equal to n+sod(n) for n = 43212212144197 and 43212212144206.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 216593012 + ... + 216792428.

It is an arithmetic number, because the mean of its divisors is an integer number (679020084762).

Almost surely, 2^{43212212144240} is an apocalyptic number.

43212212144240 is a gapful number since it is divisible by the number (40) 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 43212212144240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54321606780960).

43212212144240 is an abundant number, since it is smaller than the sum of its proper divisors (65431001417680).

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

43212212144240 is a wasteful number, since it uses less digits than its factorization.

43212212144240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203339 (or 203333 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 43212212144240 its reverse (4244121221234), we get a palindrome (47456333365474).

The spelling of 43212212144240 in words is "forty-three trillion, two hundred twelve billion, two hundred twelve million, one hundred forty-four thousand, two hundred forty".