43121341212 has 12 divisors (see below), whose sum is σ = 100616462856. Its totient is φ = 14373780400.

The previous prime is 43121341201. The next prime is 43121341261. The reversal of 43121341212 is 21214312134.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796722539 + ... + 1796722562.

It is an arithmetic number, because the mean of its divisors is an integer number (8384705238).

Almost surely, 2^43121341212 is an apocalyptic number.

It is an amenable number.

43121341212 is an abundant number, since it is smaller than the sum of its proper divisors (57495121644).

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

43121341212 is a wasteful number, since it uses less digits than its factorization.

43121341212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593445108 (or 3593445106 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

Adding to 43121341212 its reverse (21214312134), we get a palindrome (64335653346).

The spelling of 43121341212 in words is "forty-three billion, one hundred twenty-one million, three hundred forty-one thousand, two hundred twelve".